Samsung Galaxy WatchSamsung Galaxy Watch Active
Tech specs 
Size46mm version (46 x 49 x 13 mm)
42mm version (41.9 x 45.7 x 12.7 mm)
40mm, 39.5 x 39.5 x 10.5mm (H x W x D)
MaterialStainless steel casingCase Material: Aluminium
Strap: Fluoroelastomer
Case Crystal: Gorilla Glass
ChargingWPC based wireless chargingWireless Charging
Battery46mm version (472 mAh)
42mm version (270 mAh)
230mAh
Battery life46mm version (up to 7 days)
42mm version (up to 3 days)
45 hours (90 hours low usage)
Water-resistance5 ATM5 ATM
Weight46mm version (63 grams)
42mm version (49 grams)
25 grams
SensorAccelerometer, Barometer, Gyro Sensor, HR Sensor, Light Sensor, GPS (Glonass,Beidou,Galileo), NFCAccelerometer, Barometer, Gyro Sensor, HR Sensor, Light Sensor, GPS (Glonass,Beidou,Galileo), NFC
DisplayCircular Super AMOLED (360 x 360)
Full Color Always On Display
Corning® Gorilla® DX+
Super AMOLED, 360 x 360 pixel resolution
Screen size46mm version (1.3 inch)
42mm version (1.2 inch)
1.1" (28.1mm)
ColorsSilver, Midnight Black, Rose GoldBlack, Green, Rose Gold, Silver
OtherOperating system: Tizen 4.0
Processor: Exynos 9110 Dual core 1.15GHz
Memory: LTE: 1.5GB RAM + 4GB Internal Memory; Bluetooth: 768MB RAM + 4GB Internal Memory
Connectivity: 3G/LTE, Bluetooth®4.2, Wi-Fi b/g/n, NFC, A-GPS/Glonass
Operating system: Tizen 4.0
Processor: Exynos 9110 Dual core 1.15GHz
Memory: 768MB RAM + 4GB Internal Memory
Connectivity: 3G/LTE, Bluetooth®4.2, 802.11 b/g/n 2.4GHz, NFC, A-GPS/Glonass
Activity tracking 
StepsYesYes
DistanceYesYes
Calories burnedYesYes
ActivityYesYes
FloorsYesYes
SleepYesYes
Heart rateYesYes
Stress & recoveryYesYes
Pulse Ox
Respiration rate
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intakeYes (through the app)Yes (through the app)
GPSYesYes
Running features
Swimming features
Other - there is a Bluetooth and LTE version of the watchMonitors blood pressure through an optional research app.
Non-fitness functions 
Smartphone notificationsYesYes
On-board music storageYesYes
Connected payYesYes
LTEYes
Links 
Affiliate link*Amazon | SamsungAmazon | Samsung
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