Samsung · 2019
Galaxy Watch Active2 Stainless Steel 40mm Size, Dimensions & Wrist Fit
The Galaxy Watch Active2 Stainless Steel 40mm looks in proportion on wrists of 14.5–20.5 cm (5.7–8.1 in) round, and fills the wrist at 15–17 cm (lug-to-lug estimated at ≈46mm; Samsung does not publish it).
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Does the Galaxy Watch Active2 Stainless Steel 40mm fit your wrist?
The 40mm suits wrists of about 14.5–20.5 cm round; the 44mm, 15.5 cm and up. Both work from 15.5 to 20.5 cm, where it is a choice between more skin either side (the 40mm) and a case that fills the wrist (the 44mm). Under 15.5 cm only the 40mm's lugs stay on the wrist; over 20.5 cm the 40mm starts to look small.
| Wrist round (mm left each side) | 40mm≈46mm lug to lug, est. | 44mm≈50.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (0.4mm over) | Overhangs (2.7mm over) |
| 15 cm / 5.9 in | Bold (1.2mm) | Overhangs (1.1mm over) |
| 16 cm / 6.3 in | Sweet spot (2.8mm) | Bold (0.6mm) |
| 17 cm / 6.7 in | Balanced (4.4mm) | Sweet spot (2.2mm) |
| 18 cm / 7.1 in | Balanced (6mm) | Sweet spot (3.8mm) |
| 19 cm / 7.5 in | Balanced (7.6mm) | Balanced (5.4mm) |
| 20 cm / 7.9 in | Balanced (9.3mm) | Balanced (7mm) |
Which Galaxy Watch Active2 size fits you?
The Galaxy Watch Active2 Stainless Steel 40mm in short
- The 44mm version is 4mm wider and 5g heavier.
- Rated for 2.5 days of use per charge.
- Water rated to 50 m.
- 10.9mm thick. Middle of the pack for thickness at this width.
- 1.2 inches AMOLED display, always-on capable.
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Size, fit and battery side by side, against any smartwatch we list.
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Galaxy Watch Active2 Stainless Steel 40mm battery life
Published runtime
- Battery life2.5 days
Where it ranks among Samsung watches
- Everyday use2.5 days#16 of 64
- Capacity247 mAh#52 of 64
2D Dimension Schematics
- Samsung Galaxy Watch Active2 Stainless Steel 40mm 40mm × ≈46mm (est.) · 10.9mm thick
3D preview
Samsung Galaxy Watch Active2 Stainless Steel 40mm on a wrist
What size band does the Galaxy Watch Active2 Stainless Steel 40mm take?
Lug width
20mm
Alternatives to the Galaxy Watch Active2 Stainless Steel 40mm
Galaxy Watch Active2 Stainless Steel 40mm specifications
- Battery life
- 2.5 days
- Display
- 1.2 inches
- Resolution
- 360 x 360 px
- Water rating
- Waterproof
- Glass
- Gorilla Glass DX+
- Strap
- 20 mm
- Storage
- 4GB
Show all specificationsSamsung's published specification, for reference · checked September 2026
Design
- width
- 40
- height
- 40
- volume
- 17.44 cm³
- weight
- 37 g
- thickness
- 10.9
- resolution
- 360 x 360 px
- screen size
- 1.2 inches
- Display type
- OLED/AMOLED
- Has a display
- Yes
- pixel density
- 424 ppi
- width of band
- 20 mm
- water resistance
- Waterproof
- Always-On Display
- Yes
- has a touch screen
- Yes
- Gorilla Glass version
- Gorilla Glass DX+
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Yes
- maximum operating temperature
- 40 °C
- has branded damage-resistant glass
- Yes
- lowest potential operating temperature
- 0 °C
Battery
- battery life
- 2.5 days
- battery power
- 247 mAh
- has wireless charging
- Yes
- has a removable battery
- No
- Has a solar power battery
- No
- has a rechargeable battery
- Yes
Sensors
- has GPS
- Yes
- has a compass
- Yes
- Has a barometer
- Yes
- has a gyroscope
- Yes
- Has a cadence sensor
- No
- has an accelerometer
- Yes
- Monitors perspiration
- No
- Has a heart rate monitor
- Yes
- Has a temperature sensor
- No
- Monitors blood oxygenation levels
- No
Features
- RAM
- 0.75GB
- CPU speed
- 2 x 1.15 GHz
- release date
- 2019-08-05
- Has a stopwatch
- Yes
- Has smart alarm
- No
- Has call control
- Yes
- Has silent alarm
- Yes
- internal storage
- 4GB
- Has notifications
- Yes
- Has ECG technology
- Yes
- Locates your phone
- Yes
- has a front camera
- No
- has fall detection
- Yes
- has voice commands
- Yes
- Acquires GPS faster
- No
- Has vibrating alerts
- Yes
- number of microphones
- 1
- Can be used to answer calls
- Yes
- has irregular heart rate warnings
- Yes
- Has a built-in camera remote control function
- Yes
Connectivity
- has NFC
- Yes
- Wi-Fi version
- Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
- supports ANT+
- Yes
- supports Wi-Fi
- Yes
- supports Galileo
- Yes
- Bluetooth version
- 5
- has a cellular module
- No
- Is compatible with iOS
- Yes
- Is compatible with Android
- Yes
Miscellaneous
- Has passcode
- Yes
- Has auto pause
- Yes
- maximum Bluetooth range
- 243 m
- Is compatible with Windows
- No
- Is compatible with Mac OS X
- No
- has an external memory slot
- No
- Compatible with smart scales
- Yes
- has a battery level indicator
- Yes
- has a socket for a 3.5 mm audio jack
- No
- Compatible with external heart rate monitors
- Yes
App & Software
- Ad-free
- Yes
- Free app
- Yes
- Tracks BMI
- Yes
- Has coaching
- Yes
- Supports routes
- Yes
- Has achievements
- Yes
- Has goal setting
- Yes
- Has exercise diary
- Yes
- Has weight tracking
- Yes
- Predicts start date
- Yes
- Tracks water intake
- Yes
- Has inactivity alerts
- Yes
- Has period notifications
- Yes
- Has temperature tracking
- No
- Provides activity reports
- Yes
- Counts how many calories you've burned
- Yes
Activity tracking
- Measures pace
- Yes
- Tracks distance
- Yes
- Tracks elevation
- Yes
- Designed for golf
- No
- Tracks your sleep
- Yes
- Tracks steps taken
- Yes
- Designed for diving
- No
- Has a route tracker
- Yes
- Has exercise tagging
- Yes
- Has multi-sport mode
- Yes
- Tracks calorie intake
- Yes
- Provides sleep reports
- Yes
- Detects activities automatically
- Yes
- Has a stroke counter for swimming
- Yes
