Garmin Descent G2

Works with: iPhone and Android
Display: AMOLED, 1.2 in
Case sizes: 45.5 mm
Battery: 10 days
GPS battery: 20 hours
Weight: 41 g

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Garmin Descent G2 at a glance

Battery

Around two weeks

Up to 10 days in smartwatch mode. 20 hours with GPS.
GPS

Built-in GPS

No maps. Runs and rides without your phone.
Display

AMOLED, 1.2 in

1.2 in, always-on option and touchscreen.
Health

Heart, sleep and more

Measures blood oxygen and HRV.
Phone & smart

iPhone and Android

Payments.
Build

41 g

41 g. Sapphire lens.

Garmin Descent G2 full specifications

Overview

Brand	Garmin

Platform & apps

Works with iPhone and Android phones, running Garmin.

It has an app store for extra apps and watch faces.

Operating system	Garmin
Works with	iPhone and Android
Storage	4 GB
App store	Yes

Display

A vivid, high-contrast screen that is easy to read indoors and out.

1.2 in, always-on option and touchscreen.

Display type	AMOLED
Screen size	1.2 in
Resolution	390 x 390
Colour display	Yes
Always-on display	Yes
Touchscreen	Yes
Controls	touchscreen, buttons

Design & durability

A 45.5 mm case weighing 41 g.

A sapphire lens resists scratches.

Case sizes	45.5 mm
Dimensions	45.5 x 45.5 x 15.2 mm
Thickness	15.2 mm
Weight (case)	41 g
Weight with band	65 g
Case material	fiber-reinforced ocean-bound plastic
Bezel material	fiber-reinforced ocean-bound plastic
Lens	Sapphire crystal
Band material	silicone
Band width	22 mm
Band fitting	QuickFit 22 mm
Fits wrists	128-224 mm

Battery

Around two weeks: up to 10 days in smartwatch mode.

With the always-on display, about 4 days. With GPS on, up to 20 hours. Real battery life depends on screen brightness, notifications and workouts.

Battery (smartwatch mode)	10 days
Battery (GPS)	20 hours
All battery modes	Smartwatch: 10 days; Always-on display: 4 days; Battery saver: 12 days; GPS: 20 hours; All satellite systems: 15 hours; Max battery GPS: 44 hours
Charging	clip

GPS & navigation

Built-in GPS, so you can record runs and rides without your phone.

Navigation shows a breadcrumb trail, not a full map.

GPS	Built-in
Satellite systems	GPS, GLONASS, Galileo
Maps	Breadcrumb trail
Navigation features	point-to-point navigation, breadcrumb trail, back-to-start, TracBack, reference point, course guidance, projected waypoint, Sight 'N Go, area calculation

Health & sensors

Tracks heart rate around the clock, plus blood oxygen and HRV.

For sleep, it offers sleep coaching.

Sensors	optical HR, SpO2, barometer, compass, gyroscope, accelerometer, thermometer, depth
Heart-rate sensor	Garmin Elevate
Heart-rate tracking	24/7
High/low heart-rate alerts	Yes
Heart-rate variability	Yes
Blood oxygen (SpO2)	Yes
Respiration rate	Yes
Sleep tracking	Sleep coaching
Stress tracking	Yes
Energy score	Body Battery
Readiness score	Training Readiness
Cycle tracking	Yes

Safety

Has an emergency SOS feature.

SOS works through your paired phone. Live tracking lets friends follow your workouts.

Emergency SOS	Via phone
Incident detection	Yes
Live tracking	Yes

Training

Built for training, with the metrics serious athletes use.

It adds a triathlon mode, running power and daily suggested workouts.

Auto activity detection	Yes
Triathlon / multisport	Yes
Swim tracking	Pool and open water
Underwater heart rate	Yes
Training metrics	VO2 max, training load, training effect, recovery time, race predictor, HRV status, lactate threshold, training status, training readiness
Adaptive coaching	Yes
Running dynamics	Yes
Wrist running power	Yes
Strength rep counting	Yes
Heart-rate broadcast	Yes
External sensors	ANT+, Bluetooth HR strap, power meter, foot pod, speed/cadence, bike radar/lights, golf club tags
Smart trainer control	Yes

Smart features

Smart extras include contactless payments.

Notifications	Yes
Message replies	Android
Contactless payments	Yes
Payment service	Garmin Pay
Bluetooth	Bluetooth LE
Find my phone	Yes
Find my watch	Yes

Diving, golf & more

It works as a dive computer for multi-gas scuba.

Rated to 100 m.

Specialist modes	golf, tactical, dive, outdoor, gaming
Diving	Multi-gas dive computer
Max dive depth	100 m
Decompression model	Bühlmann ZHL-16c with Gradient Factors
Gases	air, nitrox, trimix

Specs compiled from Garmin's product pages and datasheets. Manufacturers revise hardware between versions, so check the version on the box. Spotted an error? Tell us.