Garmin · 2025
Descent™ G2Size, Dimensions & Wrist Fit
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.
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The Descent™ G2 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 15 hours and 12 days per charge depending on the power mode — battery saver at best, all satellite systems at worst.
- Water rated to Dive (100 meters).
- 65g on the wrist. Heavier than 87% of the 46mm watches we have weights for.
- 1.2" (30.4 mm) diameter AMOLED display.
- Takes 22mm bands, so third-party straps fit without an adapter.
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.
Happy with the fit? Check current availability for the Descent™ G2.
Check offer2D Dimension Schematics
The Descent™ G2 drawn to scale — from above, and in profile against the wrist.
- Garmin Descent™ G245.5mm · 15.2mm thick
3D preview
Garmin Descent™ G2 on a wrist
On an arm sized to your own wrist — the view a product photo never gives you.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
How long the Descent™ G2 lasts, by power mode
Runtime changes by a factor of 19 depending on what you leave switched on. Bars are scaled against the longest mode.
always-on displayraise-to-wake
- Battery Saver12 days
- Smartwatch10 days · 4 days always-on
- Expedition GPS10 days
- Max Battery GPS44 hours
- Dive27 hours
- GPS Only20 hours
- All Satellite Systems15 hours
How the Descent™ G2 ranks on battery
Against the 268 Garmin watches in our database, ranked on each figure Garmin publishes.
- Everyday use10 days#179 of 257
- GPS tracking20 hours#149 of 233
- Power save12 days#99 of 106
What size band does the Descent™ G2 take?
Lug width
22mm
Any 22mm strap fits, so you are not restricted to Garmin's own bands. Quick-release pins let you swap without tools — check that a replacement lists 22mm and quick-release before buying.
Affiliate disclosure: As an Amazon Associate, WatchFitTool earns from qualifying purchases. If you buy through links on this page, we may earn a commission at no extra cost to you. Learn more.
Descent™ G2 specifications
The figures that decide a purchase, followed by every line Garmin publishes.
- 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
- 1.2" (30.4 mm) diameter
- Resolution
- 390 x 390 pixels
- Water rating
- Dive (100 meters)
- Case material
- fiber-reinforced ocean-bound plastic
- Bezel
- fiber-reinforced ocean-bound plastic
- Glass
- sapphire crystal
- Strap
- silicone
- Storage
- 4 GB
- Charging
- Garmin proprietary clip charger
Full specification sheet
287 published lines across 22 groups, unedited
Overview
- Family
- Garmin
General
- 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 Size
- 1.2" (30.4 mm) diameter
- Case material
- fiber-reinforced ocean-bound plastic
- Color display
- Lens Material
- sapphire crystal
- Bezel Material
- fiber-reinforced ocean-bound plastic
- Memory/History
- 4 GB
- Strap material
- silicone
- Charging method
- Garmin proprietary clip charger
- Large font option
- Display resolution
- 390 x 390 pixels
- Leakproof inductive buttons
- QuickFit® watch band compatible
- yes (22 mm)
Sensors
- GPS
- Compass
- GLONASS
- Galileo
- Gyroscope
- Thermometer
- Depth sensor
- Accelerometer
- Barometric altimeter
- Pulse Ox Blood Oxygen Saturation Monitor
- Garmin Elevate™ wrist heart rate monitor
Product Info
- Main SKU
- 010-02986-00
- Product ID
- 1558977
- Product Name
- Descent™ G2
- Release Date
- 2/14/2025
- Product Variation
- Black with Black Band
Clock Features
- Timer
- Stopwatch
- Time/date
- Alarm clock
- GPS Time Sync
- Sunrise/sunset times
- Automatic daylight saving time
Diving Features
- PO2
- Up to 2.0 with customizable deco PO2 setting
- Tides
- 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 mode
- Deep Stops
- yes (using custom gradient factors)
- Gauge mode
- Pool APNEA
- No fly time
- Safety Stop
- yes (customizable off/3min/5min)
- Dive planner
- yes (basic NDL + multi-gas deco planner)
- Dive readiness
- Multi-gas mode
- Nitrox support
- Trimix support
- APNEA hunt mode
- 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 mode
- 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 dive
- Decompression model
- Bühlmann ZHL-16c with gradient factors
- Missed Deco Lockout
- yes (can be disabled prior to dive with user acknowledgement)
- Custom end-dive timeout
- yes (20s to 10 m)
- Custom dive data screens
- 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 adjustment
- Residual Tissue Loading Reset
- yes (on the surface with user acknowledgement)
- Closed Circuit Rebreather (CCR)
- Dive ascent/descent rate indicator
- Dive activity maximum operating depth
- 100 meters
- Sync dive log to Garmin Dive™ Mobile app
- Automatically saves dive entry and exit locations
Gaming Features
- Gaming Activity
- GameOn™ app compatible
Cycling Features
- Courses
- MTB Grit & Flow
- Race an activity
- Power meter compatible
- Advanced cycling dynamics
- Compatible with Varia™ lights
- FTP (Functional Threshold Power)
- yes (with compatible accessory)
- Speed and cadence sensor support (w/sensor)
- Bike lap and lap maximum power (with power sensor)
- Compatible with Varia™ radar (rear-facing radar)
- Compatible with Vector™ and Rally™ (power meters)
- Compatible with Varia Vision™ (head-mounted display)
- Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
Golfing Features
- Tournament legal
- Digital scorecard
- Garmin AutoShot™
- Round timer/odometer
- Auto CourseView updates
- Yardage to layups/doglegs
- Hazards and course targets
- Pairs with Garmin Golf app
- Green View with manual pin position
- CT10 Automatic club tracking compatible (requires accessory)
- Yardage to F/M/B (distance to front, middle and back of green)
- Stat tracking (strokes, putts per round, greens and fairways hit)
- Measures shot distance (calculates exact yardage for shots from anywhere on course)
- manual
Running Features
- Run workouts
- Running power
- Race predictor
- Foot pod capable
- Running dynamics
- Lactate threshold
- yes (with compatible accessory)
- Grade-adjusted pace
- Trail run auto climb
- Performance condition
- Run/Walk/Stand detection
- Stride length (real time)
- PacePro™ Pacing Strategies
- Vertical oscillation and ratio
- Ground contact time and balance
- GPS-based distance, time and pace
- Cadence (provides real-time number of steps per minute)
What You'll Love
- Touchscreen
- Display type
- AMOLED
- Water rating
- Dive (100 meters)
- Garmin Pay™
- Training status
- Training readiness
- Pulse Ox blood oxygen
- yes (spot-check, during sleep, all day)
- Sleep score and insights
- Battery life (smartwatch mode)
- up to 10 days (4 days always-on)
Activity Profiles
- Gym
- Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing
- Dive
- Diving
- Swim
- Pool Swimming, Open Water Swimming
- Cycling
- Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX
- Wellness
- Walking, Pilates, Yoga , Indoor Walking
- Multisport
- Swimming/Running, Triathlon
- In the ring
- Boxing, 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 profiles
- Tactical, Inline Skating
Swimming Features
- Pool swim workouts
- Time and distance alerts
- Auto rest (pool swim only)
- Drill logging (pool swim only)
- Countdown start (pool swim only)
- Underwater wrist-based heart rate
- "Repeat on" rest timer (pool swim only)
- Basic rest timer (up from 0) (pool swim only)
- Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
- Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
- Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
- 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 Features
- XERO™ Locations
- Dual grid coordinates
Outdoor Recreation
- Tides
- TracBack®
- Sight 'N Go
- Tide glance
- Back to start
- Fish forecast
- UltraTrac mode
- Vertical speed
- GPS coordinates
- Reference point
- Area calculation
- yes (via Connect IQ™)
- Elevation profile
- Projected waypoint
- Total ascent/descent
- Future elevation plot
- Distance to destination
- Expedition GPS Activity
- Sun and moon information
- Point-to-point navigation
- Rest Timer (Ultra Run only)
- Bread crumb trail in real time
- Barometric trend indicator with Storm Alert
Daily Smart Features
- Calendar
- Connectivity
- Bluetooth® Smart, ANT+®
- Garmin Share
- Find My Phone
- Find My Watch
- VIRB® Remote
- Morning report
- Red shift mode
- Weather forecasts
- Smart Notifications
- Smart trainer control
- Smartphone compatibility
- iPhone®, Android™
- Controls smartphone music
- On-device Connect IQ™ Store
- Find My Phone during GPS activity
- Pairs with Garmin Connect™ Mobile
- Compatible with Garmin Messenger app
- Battery saver (customizable low power watch)
- Realtime settings sync with Garmin Connect™ mobile
- View images from notifications on watch (Android™ only)
- Text response/reject phone call with text (Android™ only)
- Connect IQ™ (downloadable watch faces, data fields and apps)
Activity Tracking Features
- TrueUp™
- Move IQ™
- Step counter
- Floors climbed
- Calories burned
- Distance traveled
- Intensity minutes
- Automatic rep counting
- Garmin Connect™ Challenges app
- yes (optional Connect IQ app)
- Move alerts (displays on device after a period of inactivity)
- Auto goal (learns your activity level and assigns a daily step goal)
Workout and Training Plans
- HIIT workouts
- Yoga workouts
- Cardio workouts
- Pilates workouts
- Strength workouts
- Garmin Cycling Coach
- Garmin Running Coach
- Garmin Running Coach Experts
- On-screen workout animations
- On-screen workout muscle maps
- Daily Suggested Workout - Cycling
- Daily Suggested Workout - Running
- Daily Suggested Workout - Walking
- Garmin Coach - Prebuilt Cycling Plans
Health & Wellness Monitoring
- Sleep
- Hydration
- yes (in Garmin Connect™)
- Breathwork
- Fitness age
- Sleep coach
- Nap detection
- All-day stress
- Women's health
- yes (in Garmin Connect™)
- Health snapshot
- Respiration rate
- Resting heart rate
- Relaxation reminders
- Abnormal heart rate alerts
- yes (high and low)
- Relaxation breathing timer
- Body Battery™ energy monitor
- Wrist-based heart rate (constant, every second)
Safety and Tracking Features
- Assistance
- Live Event Sharing
- Incident Detection during select activities
- Incident detection alert on phone for wearables
Kid Activity Tracking Features
- Toe-to-Toe™ Challenges app
- yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Training, Planning and Analysis Features
- % HRR
- % HR max
- HR zones
- HR alerts
- Shortcuts
- HRV status
- Manual lap
- Auto max HR
- Auto scroll
- Finish time
- HR calories
- Voice alerts
- Custom alerts
- Physio TrueUp
- Recovery time
- Training load
- VO2 Max (Run)
- Course guidance
- Training effect
- Virtual Partner
- Race an Activity
- Advanced workouts
- Interval training
- Race glance/widget
- VO2 Max (Trail Run)
- GPS speed and distance
- Configurable lap alerts
- Customizable data pages
- Unified training status
- Touch and/or button lock
- Activity history on watch
- Downloadable training plans
- Training effect (anaerobic)
- Manual multisport activities
- HRM running pace and distance
- Heat and altitude acclimation
- Customizable activity profiles
- Auto Pause® automatic timer halt
- Respiration rate (during exercise)
- yes (with compatible accessory)
- Auto Lap® interval tracking feature
- Primary benefit (Training Effect labels)
- Power Modes - customizable in-activity battery settings
- HR broadcast (broadcasts HR data over ANT+® to paired devices)
- Improved interval (includes open repeats, intervals data page, rest screen and auto detection)
Compare the Descent™ G2 head to head
How each one differs in the three measurements you can feel on the wrist. Figures are relative to the Descent™ G2.
Garmin
Descent™ G1 Solar
- Width
- same mm
- Thick
- same mm
- Weight
- +1g
Garmin
Descent™ G1 Solar - Ocean Edition
- Width
- same mm
- Thick
- same mm
- Weight
- -4g
Garmin
Descent™ Mk3i – 43 mm
- Width
- -2.5mm
- Thick
- -0.9mm
- Weight
- -15.7g
Garmin
Descent™ Mk3i – 51 mm
- Width
- +5.5mm
- Thick
- +1.2mm
- Weight
- +12.8g
Alternatives to the Descent™ G2
Watches that cover a similar amount of wrist, with the measurements that separate them.
Garmin
Descent™ G1 Solar - Ocean Edition
- Width
- 45.5mm
- Thick
- 15.2mm
- Weight
- 61g
Garmin
Descent™ G1 Solar
- Width
- 45.5mm
- Thick
- 15.2mm
- Weight
- 66g
Garmin
Descent™ G1
- Width
- 45.5mm
- Thick
- 15.2mm
- Weight
- 61g
Garmin
Forerunner® 255
- Width
- 45.6mm
- Thick
- 12.9mm
- Weight
- 49g
Garmin
Forerunner® 255 Music
- Width
- 45.6mm
- Thick
- 12.9mm
- Weight
- 49g
Garmin
Venu 2
- Width
- 45.4mm
- Thick
- 12.2mm
- Weight
- 49g
Descent™ G2 — Frequently Asked Questions
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). Drag the slider above to check it against your own measurement.
What size band does the Garmin Descent™ G2 take?
22mm. Any 22mm strap fits, so you are not limited to Garmin's own bands — look for a quick-release fitting if you want to swap without tools.
How long does the Garmin Descent™ G2 battery last?
Between 15 hours and 12 days per charge, depending on the power mode. Garmin rates Battery Saver at 12 days and All Satellite Systems at 15 hours; the chart above lists all 7 modes.
How does the Garmin Descent™ G2 battery compare with other Garmin watches?
At 10 days in everyday use it ranks #179 of the 257 Garmin watches in our database — below the middle of the range. The full ranking, including GPS and power-saving figures, is on our Garmin battery life comparison.
Is the Garmin Descent™ G2 thick for a 46mm watch?
At 15.2mm, thicker than 81% of 46mm watches — it will sit noticeably high on the wrist. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Garmin Descent™ G2?
Honor Watch 5 Pro - Bluetooth, Huawei Watch GT 6 - 46mm, Samsung Galaxy Watch8 LTE Classic, Omega Seamaster Planet Ocean 600M Co-Axial Worldtimer 45.5 Master Chronometer GMT Ceramic / Black - Grey / Rubber all sit within half a millimetre of the Garmin Descent™ G2's 45.5mm case, so they cover the same amount of wrist.
