This smart band is redesigned. it has a built-in electric heart sensor. it is a digital crown with feedback. it shows you your high and low heart rate notification. it is automatic workout detection. it's a new head to head competitions. you can also use walkie talkie also make calls send messages / listening to music/ and more. it is a sleek watch series. its battery life is 350mah Bluetooth is 4.0. it also has extraordinary features adding calls/ SMS/ pedometer/ sleep tester/ remote camera/ alarm/and much more functions just from your wrist band.