Garmin · 2025
Descent™ G2Size, Dimensions & Wrist Fit
Case Width
45.5mm
Thickness
15.2mm
Diameter
45.5mm
Weight
65g
The Garmin Descent™ G2 sits best on flat wrist widths of about 48–65mm (≈ 12.8–17.4cm wrist circumference). Adjust the slider below to check your wrist.
Does the Descent™ G2 fit your wrist?
Drag the slider to your wrist width and see the Descent™ G2 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
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Garmin Descent™ G2 Full Specifications
Overview1
FamilyGarmin
General13
Battery life
Dive Mode: Up to 27 hours
Smartwatch: Up to 10 days (4 days always-on)
Battery Saver Watch Mode: Up to 12 days
GPS Only: Up to 20 hours
All Satellite Systems: Up to 15 hours
Max Battery GPS: Up to 44 hours
Expedition GPS: Up to 10 days
Display Size1.2" (30.4 mm) diameter
Case materialfiber-reinforced ocean-bound plastic
Color displayYes
Lens Materialsapphire crystal
Bezel Materialfiber-reinforced ocean-bound plastic
Memory/History4 GB
Strap materialsilicone
Charging methodGarmin proprietary clip charger
Large font optionYes
Display resolution390 x 390 pixels
Leakproof inductive buttonsYes
QuickFit® watch band compatibleyes (22 mm)
Sensors11
GPSYes
CompassYes
GLONASSYes
GalileoYes
GyroscopeYes
ThermometerYes
Depth sensorYes
AccelerometerYes
Barometric altimeterYes
Pulse Ox Blood Oxygen Saturation MonitorYes
Garmin Elevate™ wrist heart rate monitorYes
Product Info5
Main SKU010-02986-00
Product ID1558977
Product NameDescent™ G2
Release Date2/14/2025
Product VariationBlack with Black Band
Clock Features7
TimerYes
StopwatchYes
Time/dateYes
Alarm clockYes
GPS Time SyncYes
Sunrise/sunset timesYes
Automatic daylight saving timeYes
Diving Features33
PO2Up to 2.0 with customizable deco PO2 setting
TidesYes
Backlight
yes (configurable time and intensity; auto-on at depth)
Gas mixes
Air, Nitrox and Trimix up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gasses.
APNEA modeYes
Deep Stopsyes (using custom gradient factors)
Gauge modeYes
Pool APNEAYes
No fly timeYes
Safety Stopyes (customizable off/3min/5min)
Dive planneryes (basic NDL + multi-gas deco planner)
Dive readinessYes
Multi-gas modeYes
Nitrox supportYes
Trimix supportYes
APNEA hunt modeYes
Alerts & alarms
Audible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching. Customizable (up to 40) audible and/or vibration per dive mode, based on depth or time
Single-gas modeYes
3-axis dive compass
yes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading
Auto start/end diveYes
Decompression modelBühlmann ZHL-16c with gradient factors
Missed Deco Lockout
yes (can be disabled prior to dive with user acknowledgement)
Custom end-dive timeoutyes (20s to 10 m)
Custom dive data screensYes
Customizable conservatism
yes (low/medium/high or custom using gradient factors)
Surface diver status widget
yes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status)
Automatic altitude adjustmentYes
Residual Tissue Loading Resetyes (on the surface with user acknowledgement)
Closed Circuit Rebreather (CCR)Yes
Dive ascent/descent rate indicatorYes
Dive activity maximum operating depth100 meters
Sync dive log to Garmin Dive™ Mobile appYes
Automatically saves dive entry and exit locationsYes
Gaming Features2
Gaming ActivityYes
GameOn™ app compatibleYes
Cycling Features13
CoursesYes
MTB Grit & FlowYes
Race an activityYes
Power meter compatibleYes
Advanced cycling dynamicsYes
Compatible with Varia™ lightsYes
FTP (Functional Threshold Power)yes (with compatible accessory)
Speed and cadence sensor support (w/sensor)Yes
Bike lap and lap maximum power (with power sensor)Yes
Compatible with Varia™ radar (rear-facing radar)Yes
Compatible with Vector™ and Rally™ (power meters)Yes
Compatible with Varia Vision™ (head-mounted display)Yes
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)Yes
Golfing Features13
Tournament legalYes
Digital scorecardYes
Garmin AutoShot™Yes
Round timer/odometerYes
Auto CourseView updatesYes
Yardage to layups/doglegsYes
Hazards and course targetsYes
Pairs with Garmin Golf appYes
Green View with manual pin positionYes
CT10 Automatic club tracking compatible (requires accessory)Yes
Yardage to F/M/B (distance to front, middle and back of green)Yes
Stat tracking (strokes, putts per round, greens and fairways hit)Yes
Measures shot distance (calculates exact yardage for shots from anywhere on course)manual
Running Features16
Run workoutsYes
Running powerYes
Race predictorYes
Foot pod capableYes
Running dynamicsYes
Lactate thresholdyes (with compatible accessory)
Grade-adjusted paceYes
Trail run auto climbYes
Performance conditionYes
Run/Walk/Stand detectionYes
Stride length (real time)Yes
PacePro™ Pacing StrategiesYes
Vertical oscillation and ratioYes
Ground contact time and balanceYes
GPS-based distance, time and paceYes
Cadence (provides real-time number of steps per minute)Yes
What You'll Love9
TouchscreenYes
Display typeAMOLED
Water ratingDive (100 meters)
Garmin Pay™Yes
Training statusYes
Training readinessYes
Pulse Ox blood oxygenyes (spot-check, during sleep, all day)
Sleep score and insightsYes
Battery life (smartwatch mode)up to 10 days (4 days always-on)
Activity Profiles16
Gym
Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing
DiveDiving
SwimPool Swimming, Open Water Swimming
Cycling
Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX
WellnessWalking, Pilates, Yoga , Indoor Walking
MultisportSwimming/Running, Triathlon
In the ringBoxing, Mixed Martial Arts
Team sports
Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball
Motor sports
Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling
On the Water
Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Whitewater
Racket sports
Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball
Snow & winter
Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry Skiing, Ice Skating, Snowshoeing
Indoor running
Treadmill Running, Indoor Track Running, Virtual Running
Outdoor running
Running, Outdoor Track Running, Trail Running, Obstacle Racing
Outdoor recreation
Hiking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery
Other activity profilesTactical, Inline Skating
Swimming Features12
Pool swim workoutsYes
Time and distance alertsYes
Auto rest (pool swim only)Yes
Drill logging (pool swim only)Yes
Countdown start (pool swim only)Yes
Underwater wrist-based heart rateYes
"Repeat on" rest timer (pool swim only)Yes
Basic rest timer (up from 0) (pool swim only)Yes
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)Yes
Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)Yes
Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)Yes
Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim)
yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus)
Tactical Features2
XERO™ LocationsYes
Dual grid coordinatesYes
Outdoor Recreation22
TidesYes
TracBack®Yes
Sight 'N GoYes
Tide glanceYes
Back to startYes
Fish forecastYes
UltraTrac modeYes
Vertical speedYes
GPS coordinatesYes
Reference pointYes
Area calculationyes (via Connect IQ™)
Elevation profileYes
Projected waypointYes
Total ascent/descentYes
Future elevation plotYes
Distance to destinationYes
Expedition GPS ActivityYes
Sun and moon informationYes
Point-to-point navigationYes
Rest Timer (Ultra Run only)Yes
Bread crumb trail in real timeYes
Barometric trend indicator with Storm AlertYes
Daily Smart Features22
CalendarYes
ConnectivityBluetooth® Smart, ANT+®
Garmin ShareYes
Find My PhoneYes
Find My WatchYes
VIRB® RemoteYes
Morning reportYes
Red shift modeYes
Weather forecastsYes
Smart NotificationsYes
Smart trainer controlYes
Smartphone compatibilityiPhone®, Android™
Controls smartphone musicYes
On-device Connect IQ™ StoreYes
Find My Phone during GPS activityYes
Pairs with Garmin Connect™ MobileYes
Compatible with Garmin Messenger appYes
Battery saver (customizable low power watch)Yes
Realtime settings sync with Garmin Connect™ mobileYes
View images from notifications on watch (Android™ only)Yes
Text response/reject phone call with text (Android™ only)Yes
Connect IQ™ (downloadable watch faces, data fields and apps)Yes
Activity Tracking Features11
TrueUp™Yes
Move IQ™Yes
Step counterYes
Floors climbedYes
Calories burnedYes
Distance traveledYes
Intensity minutesYes
Automatic rep countingYes
Garmin Connect™ Challenges appyes (optional Connect IQ app)
Move alerts (displays on device after a period of inactivity)Yes
Auto goal (learns your activity level and assigns a daily step goal)Yes
Workout and Training Plans14
HIIT workoutsYes
Yoga workoutsYes
Cardio workoutsYes
Pilates workoutsYes
Strength workoutsYes
Garmin Cycling CoachYes
Garmin Running CoachYes
Garmin Running Coach ExpertsYes
On-screen workout animationsYes
On-screen workout muscle mapsYes
Daily Suggested Workout - CyclingYes
Daily Suggested Workout - RunningYes
Daily Suggested Workout - WalkingYes
Garmin Coach - Prebuilt Cycling PlansYes
Health & Wellness Monitoring16
SleepYes
Hydrationyes (in Garmin Connect™)
BreathworkYes
Fitness ageYes
Sleep coachYes
Nap detectionYes
All-day stressYes
Women's healthyes (in Garmin Connect™)
Health snapshotYes
Respiration rateYes
Resting heart rateYes
Relaxation remindersYes
Abnormal heart rate alertsyes (high and low)
Relaxation breathing timerYes
Body Battery™ energy monitorYes
Wrist-based heart rate (constant, every second)Yes
Safety and Tracking Features4
AssistanceYes
Live Event SharingYes
Incident Detection during select activitiesYes
Incident detection alert on phone for wearablesYes
Kid Activity Tracking Features1
Toe-to-Toe™ Challenges app
yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Training, Planning and Analysis Features44
% HRRYes
% HR maxYes
HR zonesYes
HR alertsYes
ShortcutsYes
HRV statusYes
Manual lapYes
Auto max HRYes
Auto scrollYes
Finish timeYes
HR caloriesYes
Voice alertsYes
Custom alertsYes
Physio TrueUpYes
Recovery timeYes
Training loadYes
VO2 Max (Run)Yes
Course guidanceYes
Training effectYes
Virtual PartnerYes
Race an ActivityYes
Advanced workoutsYes
Interval trainingYes
Race glance/widgetYes
VO2 Max (Trail Run)Yes
GPS speed and distanceYes
Configurable lap alertsYes
Customizable data pagesYes
Unified training statusYes
Touch and/or button lockYes
Activity history on watchYes
Downloadable training plansYes
Training effect (anaerobic)Yes
Manual multisport activitiesYes
HRM running pace and distanceYes
Heat and altitude acclimationYes
Customizable activity profilesYes
Auto Pause® automatic timer haltYes
Respiration rate (during exercise)yes (with compatible accessory)
Auto Lap® interval tracking featureYes
Primary benefit (Training Effect labels)Yes
Power Modes - customizable in-activity battery settingsYes
HR broadcast (broadcasts HR data over ANT+® to paired devices)Yes
Improved interval (includes open repeats, intervals data page, rest screen and auto detection)Yes
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Descent™ G2 — Frequently Asked Questions
What size is the Garmin Descent™ G2?
The Garmin Descent™ G2 has a 45.5mm case and is 15.2mm thick.
Will the Garmin Descent™ G2 fit my wrist?
The Garmin Descent™ G2 looks balanced on flat wrist widths of roughly 48–65mm (about 12.8–17.4cm circumference). Use the interactive fit tool above to check against your own wrist.
How much does the Garmin Descent™ G2 weigh?
The Garmin Descent™ G2 weighs 65g (case only; straps add weight).
What is the best way to compare the Garmin Descent™ G2 with other watches?
Use our side-by-side comparison tool to see the Garmin Descent™ G2 next to any other watch — case size, thickness, lug-to-lug and full specs, scaled to real proportions.