Samsung · 2019
Galaxy Watch Active2 - Aluminium · 40mmSize, Dimensions & Wrist Fit
The Samsung Galaxy Watch Active2 - Aluminium · 40mm sits best on flat wrist widths of about 42–57mm (≈ 11.2–15.2cm wrist circumference). Adjust the slider below to check your wrist.
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.
The Galaxy Watch Active2 - Aluminium · 40mm in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Rated for 2.5 days of use per charge.
- Water rated to 50 m.
- 26g on the wrist. Lighter than 94% of the 40mm watches we have weights for.
- 1.2 inches OLED/AMOLED display, always-on capable.
- Takes 20mm bands, so third-party straps fit without an adapter.
Does the Galaxy Watch Active2 - Aluminium · 40mm fit your wrist?
Drag the slider to your wrist width and see the Galaxy Watch Active2 - Aluminium · 40mm 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 Galaxy Watch Active2 - Aluminium · 40mm.
Find it on Amazon2D Dimension Schematics
The Galaxy Watch Active2 - Aluminium · 40mm drawn to scale — from above, and in profile against the wrist. Built from the measurements, so it works whether or not the watch has a photo.
- Samsung Galaxy Watch Active2 - Aluminium · 40mm40mm · 10.9mm thick
Samsung Galaxy Watch Active2 - Aluminium · 40mm on a wrist
Put the Galaxy Watch Active2 - Aluminium · 40mm on an arm sized to your own wrist and turn it — the view a photograph on a white background never gives you.
- Samsung Galaxy Watch Active2 - Aluminium · 40mm — 40mm case, standing 10.9mm off the wrist.
Whether that clears your wrist edges is the question worth answering, and it depends on your wrist rather than on the case diameter.
See it on a wrist in 3DCase shapes are generated from each watch's published measurements — case width, lug-to-lug and thickness — not from manufacturer 3D models, so the proportions are accurate while the dial is generic.
Which Galaxy Watch Active2 size fits you?
This model comes in 4 versions. Set your measurement and each one reports its own verdict — tap any size to open its page.
Which of these fits your wrist?
Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.
All 4 Galaxy Watch Active2 variants fit this wrist. The 44mm · Aluminium gives you the most presence without overhanging; the smallest is the discreet end of the range.
- Width
- 40mm
- Thick
- 10.9mm
- Weight
- 26g
7.5mm clear a side
- Width
- 40mm
- Thick
- 10.9mm
- Weight
- 37g
7.5mm clear a side
View this size- Width
- 44mm
- Thick
- 10.9mm
- Weight
- 30g
5.5mm clear a side
View this size- Width
- 44mm
- Thick
- 10.9mm
- Weight
- 42g
5.5mm clear a side
View this sizeGalaxy Watch Active2 - Aluminium · 40mm battery life
The runtime the manufacturer publishes for everyday use.
- Smartwatch2.5 days
What size band does the Galaxy Watch Active2 - Aluminium · 40mm take?
Lug width
20mm
Any 20mm strap fits, so you are not restricted to Samsung's own bands. Quick-release pins let you swap without tools — check that a replacement lists 20mm 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.
Galaxy Watch Active2 - Aluminium · 40mm specifications
The figures that decide a purchase, followed by every line Samsung publishes.
- Battery life
- 2.5 days
- Display
- 1.2 inches
- Resolution
- 360 x 360 px
- Water rating
- 5 ATM
- Glass
- Gorilla Glass DX+
- Strap
- 20 mm
- Storage
- 4GB
- Charging
- 2 hours
Full specification sheet
113 published lines across 8 groups, unedited
Design
- width
- 40
- height
- 40
- volume
- 17.44 cm³
- weight
- 26 g
- thickness
- 10.9
- ATM rating
- 5 ATM
- resolution
- 360 x 360 px
- screen size
- 1.2 inches
- Display type
- OLED/AMOLED
- Has a display
- pixel density
- 424 ppi
- width of band
- 20 mm
- water resistance
- Waterproof
- Always-On Display
- has a touch screen
- Gorilla Glass version
- Gorilla Glass DX+
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Has sapphire glass display
- maximum operating temperature
- 40 °C
- Ingress Protection (IP) rating
- IP68
- has branded damage-resistant glass
- lowest potential operating temperature
- 0 °C
Battery
- charge time
- 2 hours
- battery life
- 2.5 days
- battery power
- 247 mAh
- has wireless charging
- has a removable battery
- Has a solar power battery
- has a rechargeable battery
Sensors
- has GPS
- has a compass
- Has a barometer
- has a gyroscope
- Has a cadence sensor
- has an accelerometer
- Monitors perspiration
- Has a heart rate monitor
- Has a temperature sensor
- Monitors blood oxygenation levels
Features
- RAM
- 0.75GB
- CPU speed
- 2 x 1.15 GHz
- release date
- 2019-08-05
- Has a stopwatch
- Has smart alarm
- Has call control
- Has silent alarm
- has HRV tracking
- internal storage
- 4GB
- measures VO2 max
- Has notifications
- Has ECG technology
- Locates your phone
- has a front camera
- has fall detection
- has voice commands
- Acquires GPS faster
- Has vibrating alerts
- number of microphones
- 1
- shows readiness level
- Can be used to answer calls
- measures resting heart rate
- has irregular heart rate warnings
- has fast/slow heart rate notifications
- Has a built-in camera remote control function
Connectivity
- has NFC
- Wi-Fi version
- Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
- supports ANT+
- supports Wi-Fi
- supports Galileo
- Bluetooth version
- 5
- has a cellular module
- Is compatible with iOS
- Is compatible with Android
Miscellaneous
- Has passcode
- Has auto pause
- Is compatible with Windows
- Is compatible with Mac OS X
- has an external memory slot
- Compatible with smart scales
- has a battery level indicator
- has a socket for a 3.5 mm audio jack
- Compatible with external heart rate monitors
App & Software
- Ad-free
- Free app
- Tracks BMI
- Has coaching
- Supports routes
- Has achievements
- Has goal setting
- Has exercise diary
- Has weight tracking
- Predicts start date
- Tracks water intake
- Has inactivity alerts
- Has period notifications
- Has temperature tracking
- Provides activity reports
- Counts how many calories you've burned
Activity tracking
- Measures pace
- Tracks distance
- Tracks elevation
- Designed for golf
- Tracks your sleep
- Tracks steps taken
- Designed for diving
- Has a route tracker
- Has exercise tagging
- Has multi-sport mode
- Tracks calorie intake
- Provides sleep reports
- Detects activities automatically
- Has a stroke counter for swimming
Compare the Galaxy Watch Active2 - Aluminium · 40mm head to head
How each one differs in the three measurements you can feel on the wrist. Figures are relative to the Galaxy Watch Active2 - Aluminium · 40mm.
Samsung
Galaxy Watch Active2 - LTE · Stainless Steel · 40mm
- Width
- same mm
- Thick
- same mm
- Weight
- +11g
Samsung
Galaxy Watch Active2 Stainless Steel - 40mm
- Width
- same mm
- Thick
- same mm
- Weight
- +11g
Samsung
Galaxy Watch Active2 LTE Aluminium - 40mm
- Width
- same mm
- Thick
- same mm
- Weight
- same g
Samsung
Gear S2 Classic - 43.6mm
- Width
- -0.1mm
- Thick
- +0.5mm
- Weight
- +16g
Alternatives to the Galaxy Watch Active2 - Aluminium · 40mm
Watches that cover a similar amount of wrist, with the measurements that separate them.
Samsung
Galaxy Watch Active2 - LTE · Stainless Steel · 40mm
- Width
- 40mm
- Thick
- 10.9mm
- Weight
- 37g
Samsung
Galaxy Watch Active2 Stainless Steel - 40mm
- Width
- 40mm
- Thick
- 10.9mm
- Weight
- 37g
Samsung
Galaxy Watch Active2 LTE Aluminium - 40mm
- Width
- 40mm
- Thick
- 10.9mm
- Weight
- 26g
Samsung
Gear S2 Classic - 43.6mm
- Width
- 39.9mm
- Thick
- 11.4mm
- Weight
- 42g
Samsung
Gear S2 Classic - 43.6mm · Platinum
- Width
- 39.9mm
- Thick
- 11.4mm
- Weight
- 42g
Samsung
Gear S
- Width
- 39.9mm
- Thick
- 12.5mm
- Weight
- 66g
Galaxy Watch Active2 - Aluminium · 40mm — Frequently Asked Questions
Will the Samsung Galaxy Watch Active2 - Aluminium · 40mm fit my wrist?
The Samsung Galaxy Watch Active2 - Aluminium · 40mm looks balanced on flat wrist widths of roughly 42–57mm (about 11.2–15.2cm circumference). Drag the slider above to check it against your own measurement.
What size band does the Samsung Galaxy Watch Active2 - Aluminium · 40mm take?
20mm. Any 20mm strap fits, so you are not limited to Samsung's own bands — look for a quick-release fitting if you want to swap without tools.
How long does the Samsung Galaxy Watch Active2 - Aluminium · 40mm battery last?
Samsung rates it at 2.5 days per charge in everyday use.
Is the Samsung Galaxy Watch Active2 - Aluminium · 40mm thick for a 40mm watch?
At 10.9mm, middle of the pack for thickness at this width. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
Should I get the 40mm or 44mm Galaxy Watch Active2?
The Galaxy Watch Active2 comes in 2 case sizes — 40mm, 44mm. Which one suits you depends on the flat width of your wrist rather than preference: the larger sizes need a wider wrist to sit inside the edge. Set your measurement in the size picker above and each variant reports its clearance in millimetres.
What other watches are the same size as the Samsung Galaxy Watch Active2 - Aluminium · 40mm?
TAG Heuer Aquaracer Professional 200 Solargraph 40 UK Limited Edition, Xiaomi Redmi Watch 6, Vivo Watch GT 2 - Bluetooth, Huawei Watch Fit 4 Pro all sit within half a millimetre of the Samsung Galaxy Watch Active2 - Aluminium · 40mm's 40mm case, so they cover the same amount of wrist.
