Watches for Underwater Records: From Scuba to Freediving and Swimming
Collection Smartwatch 2026.10.07

Watches for Underwater Records: From Scuba to Freediving and Swimming

Distinguishing the Scope of Dedicated Dive Computers and Water Sports Watches

Wrist devices used in the water cannot merely be compared by a single waterproof rating. Dedicated dive computers that handle decompression calculations and gas information, watches that support recreational scuba through apps, and products focusing on freediving or swimming records each have their unique roles. If you interpret all products based solely on a 10ATM rating as scuba equipment for the same depth, it could directly impact safety.

This list begins with dedicated dive products like the Garmin Descent and Suunto, providing separate explanations for the official underwater features of the Apple Watch Ultra, Galaxy Watch Ultra, and Amazfit T-Rex 3 Pro. We have organized the information by support depths, certifications, app subscriptions, tank pressure transmitters, and training requirements for each product, helping you check which activities they can be used for. In actual diving, adherence to the latest safety guidelines from training organizations and manufacturers should always be the first priority.
Garmin Descent Mk3i 51mm

Garmin Descent Mk3i 51mm

We included the Garmin Descent Mk3i 51mm as the first product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ list because it offers air integration and multiple diving modes that can make a significant difference for divers. The first connection condition for this watch is support for ‘iOS/Android Garmin Dive integration.’ However, it should not be assumed that just because the Garmin Descent Mk3i 51mm connects to your phone, it offers notifications, calls, and health functions all within the same range. When considering the first candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ evaluate first how often you might use those features in your exercise and daily life.

The battery information for the Garmin Descent Mk3i 51mm listed under ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ states ‘up to 66 hours in dive mode,’ and actual usage time will vary depending on screen, GPS, communication, and sensor settings. A key point to check before purchasing the Garmin Descent Mk3i 51mm in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘separate purchase of the transceiver and training/decompression planning.’ Be sure to cross-reference the model number, supported countries, domestic sales, and warranty terms from the first official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ and verify that the size fits your wrist. It’s also important to remember that the health, location, and safety records provided by the Garmin Descent Mk3i 51mm are merely reference information to assist in choosing your device and do not replace the equipment and safety protocols used by medical personnel or guardians in underwater activities.
브랜드 Garmin 호환·연결 iOS·Android Garmin Dive 연동 배터리 안내 다이브 모드 최대 66시간 안내 추천 사용자 공기 통합과 여러 다이빙 모드를 원하는 다이버 핵심 특징 200m 다이브 등급과 SubWave 공기 통합 구매 전 확인 트랜시버 별도 구매와 교육·감압 계획 이미지 출처 https://www.garmin.com/en-US/p/852159/
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Garmin Descent G1

Garmin Descent G1

We included the Garmin Descent G1 as the second product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ because it provides a sturdy button-based entry-level dive computer that can make a significant difference for users looking for a 100m dive rating and EN13319 compliance. The second connection condition for this watch is support for ‘iOS/Android Garmin Dive integration.’ However, just because the Garmin Descent G1 connects to your phone, it should not be assumed that it offers notifications, calls, and health functions within the same range. When evaluating the second candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ consider how frequently you might use those features in your exercise and daily life.

The battery information for the Garmin Descent G1 under ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ states ‘up to 25 hours in dive mode,’ with actual usage time varying based on screen, GPS, communication, and sensor settings. A key point to check before purchasing the Garmin Descent G1 in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘lack of air integration and screen size.’ Make sure to cross-reference the model number, supported countries, domestic sales, and warranty terms from the second official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ and check that the size fits your wrist. It’s also crucial to remember that the health, location, and safety records provided by the Garmin Descent G1 are merely reference information to assist in your choice of device and do not replace professional equipment and safety procedures used by medical personnel or guardians in underwater activities.
브랜드 Garmin 호환·연결 iOS·Android Garmin Dive 연동 배터리 안내 다이브 모드 최대 25시간 안내 추천 사용자 튼튼한 버튼형 입문 다이브 컴퓨터를 찾는 사용자 핵심 특징 100m 다이브 등급과 EN13319 준수 구매 전 확인 공기 통합 미지원과 화면 크기 이미지 출처 https://www.garmin.com/en-US/p/766516/
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Suunto Ocean

Suunto Ocean

We included the Suunto Ocean as the third product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ because it can make a significant difference for users who want to record diving and land sports with one device, offering both scuba and freediving features as well as offline mapping capabilities. The third connection condition for this watch is support for ‘iOS/Android Suunto app integration.’ However, it should not be assumed that just because the Suunto Ocean connects to your phone, it offers notifications, calls, and health functions within the same range. When considering the third candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ evaluate how often you might use those features in your exercise and daily life.

The battery information for the Suunto Ocean under ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ indicates that ‘it varies depending on the usage mode,’ and actual usage time will change depending on screen, GPS, communication, and sensor settings. A crucial point to check before purchasing the Suunto Ocean in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘wireless tank pressure sensor must be configured separately.’ Be sure to cross-reference the model number, supported countries, domestic sales, and warranty terms from the third official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ and confirm that the size fits your wrist. It’s essential to remember that the health, location, and safety records provided by the Suunto Ocean are merely reference information to assist in selecting your device and do not replace the professional equipment and safety procedures used by guardians and medical personnel in underwater activities.
브랜드 Suunto 호환·연결 iOS·Android Suunto 앱 연동 배터리 안내 사용 모드에 따라 달라짐 추천 사용자 다이빙과 육상 스포츠를 한 기기로 기록하려는 사용자 핵심 특징 스쿠버·프리다이빙 기능과 오프라인 지도 구매 전 확인 무선 탱크 압력 센서는 별도 구성 이미지 출처 https://www.suunto.com/en-us/Products/Dive-Computers-and-Instruments/suunto-ocean/suunto-ocean-steel-black/
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Suunto D5

Suunto D5

We included the Suunto D5 as the fourth product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ because it can make a significant difference for users looking for an everyday dive computer with a color screen offering both scuba and freediving modes along with wireless mobile connectivity. The fourth connection condition for this watch is support for ‘iOS/Android Suunto app integration.’ However, it should not be assumed that just because the Suunto D5 connects to your phone, it offers notifications, calls, and health functions within the same range. When evaluating the fourth candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ consider how often you might use those functions in your exercise and daily life.

The battery information for the Suunto D5 under ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ states ‘it varies depending on dive mode and settings,’ and actual usage time will depend on screen, GPS, communication, and sensor settings. A key point to check before purchasing the Suunto D5 in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘the need for separate purchase of the tank pressure transmitter and training requirements.’ Be sure to cross-reference the model number, supported countries, domestic sales, and warranty terms from the fourth official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ and check the wrist size fits. It’s also important to remember that the health, location, and safety records provided by the Suunto D5 are merely reference information that aid in your device selection and do not replace the professional equipment and safety protocols used by guardians and medical personnel in underwater activities.
브랜드 Suunto 호환·연결 iOS·Android Suunto 앱 연동 배터리 안내 다이브 모드와 설정에 따라 달라짐 추천 사용자 컬러 화면의 일상형 다이브 컴퓨터를 찾는 사용자 핵심 특징 스쿠버·프리다이빙 모드와 무선 모바일 연결 구매 전 확인 탱크 압력 전송기 별도 구매와 교육 요건 이미지 출처 https://www.suunto.com/en-us/Products/Dive-Computers-and-Instruments/suunto-d5/suunto-d5-all-black/
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Apple Watch Ultra 4

Apple Watch Ultra 4

We included the Apple Watch Ultra 4 as the fifth product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ because it can make a significant difference for users looking to record recreational scuba and water activities with the official support app, offering 100m waterproofing along with gauges and Oceanic+ integration. The fifth connection condition for this watch is that it is ‘iPhone only.’ However, just because the Apple Watch Ultra 4 connects to your phone, it should not be assumed that it offers notifications, calls, and health functions all within the same range. Before evaluating the fifth candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ think about how often you would actually use these features in your exercise and daily situations.

The battery information for the Apple Watch Ultra 4 listed under ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ states ‘officially rated for up to 50 hours,’ while actual usage time will vary based on screen, GPS, communication, and sensor settings. A key point to check before deciding on the Apple Watch Ultra 4 in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘the supported range of Oceanic+, subscription requirements, and permissible depths.’ Be sure to cross-reference the model number, supported countries, domestic sales, and warranty conditions from the fifth official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ and verify the size fits your wrist. It’s crucial to remember that the health, location, and safety records provided by the Apple Watch Ultra 4 are merely reference information to assist you in your device selection and do not replace professional equipment and safety protocols used by guardians or medical personnel in underwater activities.
브랜드 Apple 호환·연결 iPhone 전용 배터리 안내 공식 기준 최대 50시간 추천 사용자 공식 지원 앱으로 레크리에이션 스쿠버와 수상 활동을 기록하려는 사용자 핵심 특징 100m 방수와 수심계·Oceanic+ 연동 구매 전 확인 Oceanic+ 지원 범위·구독과 허용 수심 이미지 출처 https://www.apple.com/kr/apple-watch-ultra-4/
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Samsung Galaxy Watch Ultra (2025)

Samsung Galaxy Watch Ultra (2025)

We included the Samsung Galaxy Watch Ultra (2025) as the sixth product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ because it can make a significant difference for users looking to record swimming, snorkeling, and outdoor activities, offering 10ATM waterproofing and dual-frequency GPS capabilities. The sixth connection condition for this watch indicates it is ‘Android-centered.’ However, simply connecting the Samsung Galaxy Watch Ultra (2025) to a phone does not guarantee that it will provide notifications, calls, and health features within the same range. When evaluating the sixth candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ determine how often you might use these capabilities in your exercise and daily life.

The battery information for the Samsung Galaxy Watch Ultra (2025) in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ states ‘it varies based on power-saving settings,’ with actual usage time determined by settings for screen, GPS, communication, and sensors. A key point to check before purchasing the Samsung Galaxy Watch Ultra (2025) in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘it is not a dedicated scuba dive computer.’ Be sure to cross-reference the model number, supported countries, domestic sales, and warranty terms from the sixth official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ and confirm that it fits your wrist size. The health, location, and safety records provided by the Samsung Galaxy Watch Ultra (2025) only serve as reference information to help in your device choice and do not replace the professional equipment and safety protocols used by guardians or medical personnel in underwater activities.
브랜드 Samsung 호환·연결 Android 중심 배터리 안내 절전 설정에 따라 달라짐 추천 사용자 수영·스노클링과 야외 활동을 기록하려는 사용자 핵심 특징 10ATM 방수와 듀얼 주파수 GPS 구매 전 확인 전용 스쿠버 다이브 컴퓨터가 아니라는 점 이미지 출처 https://www.samsung.com/sec/watches/galaxy-watch-ultra-2025/
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Amazfit T-Rex 3 Pro

Amazfit T-Rex 3 Pro

We included the Amazfit T-Rex 3 Pro as the seventh product in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ because it can make a significant difference for users who wish to use both official freediving and recreational scuba modes alongside outdoor recordings, thanks to its durable case and freediving mode. The seventh connection condition for this watch indicates it supports ‘iOS and Android integration.’ However, just because the Amazfit T-Rex 3 Pro connects to a phone does not mean it guarantees the availability of notifications, calls, and health features within the same range. When considering the seventh candidate for the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming,’ evaluate how frequently you might use these features in your exercise and daily activities.

The battery information for the Amazfit T-Rex 3 Pro listed under ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ states ‘it varies based on GPS and screen settings,’ and actual usage time can fluctuate according to settings for the display, GPS, communication, and sensors. A key point to check before purchasing the Amazfit T-Rex 3 Pro in the ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ is ‘the official permissible range for diving modes and domestic A/S.’ Be sure to verify the model number, supported countries, domestic sales, and warranty conditions from the seventh official link of ‘Watches for Underwater Records: From Scuba to Freediving and Swimming’ and ensure that the size fits your wrist. The health, location, and safety records provided by the Amazfit T-Rex 3 Pro serve solely as reference information to assist in your product selection and do not substitute for professional equipment and safety protocols used by medical personnel or guardians in underwater activities.
브랜드 Amazfit 호환·연결 iOS·Android 연동 배터리 안내 GPS·화면 설정에 따라 달라짐 추천 사용자 공식 프리다이빙·레크리에이션 스쿠버 모드를 아웃도어 기록과 함께 쓰려는 사용자 핵심 특징 견고한 케이스와 프리다이빙 모드 구매 전 확인 다이빙 모드의 공식 허용 범위와 국내 A/S 이미지 출처 https://us.amazfit.com/products/t-rex-3-pro
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If your goal is scuba diving, start by determining whether you need decompression algorithms, gas modes, ascent speed warnings, and log backups, and then compare dedicated equipment first. If freediving and swimming are your focus, factors like maximum depth, automatic detection conditions, button controls, and maintenance after saltwater use become more critical. While general outdoor watches may have high waterproof ratings, they cannot replace the decompression planning and emergency procedures of a dive computer.

Before purchasing, check the manual of the exact model for allowed activities and prohibited environments, and also factor in app subscription and additional sensor costs. It's safer to learn the settings and notifications well in advance and prepare backup equipment rather than doing updates just before diving. After underwater activities, wash the device with fresh water, and check the charging contacts and strap condition to prepare for next use.
한눈에 보기 7개
Garmin Descent Mk3i 51mm
Garmin · iOS·Android Garmin Dive 연동 · 다이브 모드 최대 66시간 안내 · 공기 통합과 여러 다이빙 모드를 원하는 다이버 · 200m 다이브 등급과 SubWave 공기 통합 · 트랜시버 별도 구매와 교육·감압 계획 · https://www.garmin.com/en-US/p/852159/
Garmin Descent G1
Garmin · iOS·Android Garmin Dive 연동 · 다이브 모드 최대 25시간 안내 · 튼튼한 버튼형 입문 다이브 컴퓨터를 찾는 사용자 · 100m 다이브 등급과 EN13319 준수 · 공기 통합 미지원과 화면 크기 · https://www.garmin.com/en-US/p/766516/
Suunto Ocean
Suunto · iOS·Android Suunto 앱 연동 · 사용 모드에 따라 달라짐 · 다이빙과 육상 스포츠를 한 기기로 기록하려는 사용자 · 스쿠버·프리다이빙 기능과 오프라인 지도 · 무선 탱크 압력 센서는 별도 구성 · https://www.suunto.com/en-us/Products/Dive-Computers-and-Instruments/suunto-ocean/suunto-ocean-steel-black/
Suunto D5
Suunto · iOS·Android Suunto 앱 연동 · 다이브 모드와 설정에 따라 달라짐 · 컬러 화면의 일상형 다이브 컴퓨터를 찾는 사용자 · 스쿠버·프리다이빙 모드와 무선 모바일 연결 · 탱크 압력 전송기 별도 구매와 교육 요건 · https://www.suunto.com/en-us/Products/Dive-Computers-and-Instruments/suunto-d5/suunto-d5-all-black/
Apple Watch Ultra 4
Apple · iPhone 전용 · 공식 기준 최대 50시간 · 공식 지원 앱으로 레크리에이션 스쿠버와 수상 활동을 기록하려는 사용자 · 100m 방수와 수심계·Oceanic+ 연동 · Oceanic+ 지원 범위·구독과 허용 수심 · https://www.apple.com/kr/apple-watch-ultra-4/
Samsung Galaxy Watch Ultra (2025)
Samsung · Android 중심 · 절전 설정에 따라 달라짐 · 수영·스노클링과 야외 활동을 기록하려는 사용자 · 10ATM 방수와 듀얼 주파수 GPS · 전용 스쿠버 다이브 컴퓨터가 아니라는 점 · https://www.samsung.com/sec/watches/galaxy-watch-ultra-2025/
Amazfit T-Rex 3 Pro
Amazfit · iOS·Android 연동 · GPS·화면 설정에 따라 달라짐 · 공식 프리다이빙·레크리에이션 스쿠버 모드를 아웃도어 기록과 함께 쓰려는 사용자 · 견고한 케이스와 프리다이빙 모드 · 다이빙 모드의 공식 허용 범위와 국내 A/S · https://us.amazfit.com/products/t-rex-3-pro

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