Samsung | Accessories | Womens Samsung Galaxy Watch Active2 。Heart and Health Monitoring - 1.4” (34 mm),Circular Super AMOLED (360 x 360) - Full Color Always On Display - Corning Gorilla Glass DX+ - Processor: 1.15 GHz Dual-Core - Maximum Depth of Water Resistance: 164 feet Lightweight Design - 5ATM + IP68 / MIL-STD-810G - Accelerometer, Gyro, Barometer, HRM, Ambient Light - Compatible with a 20mm standard strap Advance Auto Fitness Tracker and Coaching - 768MB RAM + 4GB Internal Memory - Battery: 340mAh - Bluetooth 5.0 Compatibility: Samsung, other Android: Android 5.0 or higher & RAM 1.5GB above - iPhone: iPhone 5 and above, iOS 9.0 or above With a thin, light design, Galaxy Watch Active2 is fit for any time and for any occasion, from working out to sleeping in