Galaxy Watch Active2 44mm | Aqua Black Color (Aluminum) | Bluetooth | Wifi | GPS | Lightweight | Advanced Auto Fitness Tracker and Run Coaching | Heart and Health Monitoring | Dimensions : 44 x 44 x 10.9mm | Battery : 340mAh | Compatibility : Samsung, other Android: Android 5.0 or higher & RAM 1.5GB above iPhone: iPhone 5 and above, iOS 9.0 or above