Type: LTPO AMOLED++ (Advanced AMOLED technology) Size: 1.6 inches (world's largest in its category) Resolution: 480 x 480 pixels Brightness: 1000 nits (peak) Refresh Rate: 60 Hz Protection: High Hardness Glass GPS Accurate 0.6-meters. Compatible with IOS & Android The maximum battery life:In energy-saving mode is 44 days. 5ATM Waterproof:On rainy days or wear this watch 50 meters underwater. The Essence of Ceramic Bezel：Repeatedly refined through 140 intricate processes, the hardness finally reached 1500HV, comparable to diamond. 150+ Sports Mode. Clear & Stable Bluetooth Phone Call:Massgae notification timely. Two hours' recording of meetings :You won't miss any important ideas in your work.