Water resistan: 10ATM/100M with patented Miclock. Shock resistant: super durable 48mm polycarbonate case with stainless steel caseback. Heavy duty crystal: ultra- tough corning gorilla glass built to resist the elements. Roll cage bezel 316l SURGICAL GRADE STAINLESS RAISED BEZEL PROTECTS THE TOUCH SCREEN AND IMPROVES DURABILITY. Display: 1,39'' 400x400 AMOLDED, with ambient light sensor. Touchscreen, sensors, operating evironment: use of the divice requires a smartphone with the following specification: Android - smatphone with android 4.3 or higher iOS- iphone 5 or later with iOS 8.2 or later. Chipset, Buttons: 1 Microphone: Yes - Vibrator: Yes - Memory: 512MB / 4GM FLASH (ePOP). Wireless connectivity. Battery: lithium-Ion, 400mAh. Size of case: 48mm OS: Android Wear.