Garmin Descent G2 Dive Computer, AMOLED Display

The Garmin Descent G2 is a watch-style dive computer with multiple dive modes, a bright AMOLED display and health and wellness tracking. Its listed battery life varies by use, reaching up to 27 hours in dive mode and up to 10 days in smartwatch mode.

At a glance

Supports recreational, advanced, technical and freediving, as well as pool apnea, according to the listing.
Built-in GPS and multi-GNSS support are described for marking dive entry and exit points at the surface.
Dive logs can be stored on the device and reviewed through the Garmin Dive smartphone app.
Smartwatch features include notifications, Garmin Pay with a supported bank and Connect IQ app personalization.
The listing describes health tracking including wrist-based heart rate, Pulse Ox, sleep score and Body Battery. It states that readings are estimates, the watch is not a medical device and Pulse Ox is unavailable in some countries.

Price

$839.99Save 16%

Reference price: ~~$999.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Multiple dive types are supported, including technical diving, freediving and pool apnea.
Mode-specific battery claims distinguish up to 27 hours in dive mode from up to 10 days in smartwatch mode.
GPS dive entry and exit marking and on-device dive logs add useful post-dive tracking options.
Customer feedback reports satisfaction with screen quality, fitness tracking and sleep monitoring.

Cons

The listed battery life is substantially shorter in dive mode than in smartwatch mode, so dive frequency and charging plans matter.
Customer feedback is mixed about the watch's size, making its listed 45 mm dimensions worth considering for smaller wrists.

Technical specifications

28 specifications

Identity
Brand	Garmin
Model	Descent G2

Display
Screen size	1.2 inches
Screen technology listed	AMOLED
Resolution	240 x 240

Dive and tracking features
Dive rating	10 ATM dive rating
Dive modes	Support for all types of diving, including recreational, advanced, technical, freediving and pool apnea
Satellite tracking	Multi-GNSS support allows divers to mark surface entry and exit points so you can see exactly where you started and ended the dive
Health and activity features	Accelerometer, Activity Tracker, GPS, Multisport Tracker, Notifications
Heart-rate metric	Heart Rate

Connectivity and controls
Wireless connection listed	Bluetooth
Controls	Buttons, Touchscreen
Phone compatibility	Compatible with iOS and Android devices

Power and battery
Battery life listed	10 days
Dive-mode battery life	up to 27 hours in dive mode
Smartwatch-mode battery life	up to 10 days in smartwatch mode
Battery type	Lithium Ion

Dimensions and fit
Form factor	Round
Dimensions listed	45 x 45 x 15 millimeters
Weight listed	65 g
Band width	22 millimeters
Band material	Plastic
Closure	Buckle

Materials and protection
Water resistance listed	Waterproof
Case material listed	Fiber reinforced plastic to the ocean
Recycled-material claim	100% of the plastic used to make the watch’s housing, bezel and buttons comes from recycled ocean-bound plastics

Computing specifications
Operating system	Garmin OS
Storage listed	4 GB

What to know before buying

Battery figures are mode-specific manufacturer claims. Health measurements are described as estimates, not medical readings. Smart notifications require a compatible smartphone, Garmin Pay requires a supported bank, and Pulse Ox is not available in all countries.

Who is it for?

A good fit for

Divers who want one watch-style computer for recreational, advanced, technical, freediving and pool-apnea use.
Buyers who also want GPS, activity tracking, health features and smartwatch functions for everyday wear.

Less suited to

Buyers who need a dive-mode battery duration beyond the listed up-to-27-hour claim.
People who prefer a smaller watch. Customer feedback is mixed about the device's size.

Garmin Descent G2 Dive Computer, AMOLED Display · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 131 ratings

5 stars82%82%
4 stars7%7%
3 stars3%3%
2 stars4%4%
1 star4%4%

Customer feedback highlights perceived strengths in features, fitness tracking, battery life, screen quality, data quality and sleep monitoring. The reported 10-day battery experience aligns with the listing's smartwatch-mode claim, but the listing gives a shorter, separate battery figure for dive mode. Opinions about size are mixed, so fit may be a deciding factor. Aggregate ratings are largely favourable, but do not explain individual experiences or establish performance in a particular dive situation.

Positive themes

Customers report satisfaction with battery life, screen quality, data quality and sleep monitoring.
Customer feedback describes the watch as useful for fitness tracking and praises its range of features.

Mixed feedback

Customer feedback is mixed about the device's size.

Frequently asked questions

Which kinds of diving does the Descent G2 support?

The listing specifies recreational, advanced and technical diving, freediving and pool apnea.

How long does the battery last?

The listing claims up to 27 hours in dive mode and up to 10 days in smartwatch mode. These figures apply to different operating modes.

Can it record where a dive starts and ends?

The listing says multi-GNSS support can mark surface entry and exit points. Dive logs can be stored on the watch and reviewed with the Garmin Dive smartphone app.

Are the health measurements medical readings?

No. The listing says the watch is not a medical device and that displayed health data is intended as a close estimation. Pulse Ox availability also varies by country.