Fitness Wristband:? Accurately track your all day stats like steps taken、 distance travelled、 calories burned、 stairs climbed and active minutes? Monitor daily stats and time of day with a bright OLED display? Monitor how long and how well you sleep and wake with a silent vibrating alam? Get all call notifications on your wristband? Comfortable band enabling use during the day and night? Standby Time : 4 daysFeatures:? Step counts/distance measuring? Calorie consumption management? Sleep management? Call reminder? Sedentary reminder? Vibration alarm clockCompatibility:Compatible with iOS 6.1 or above: iPhone 4S / 5 / 5S / 5C / 6 / 6 plus; Android system 4.3 or aboveMaterial:Aluminum alloy shell、 soft rubber strapMemory:64KB RAM + 64KB ROMPackage content :1 x Smart Watch 1 x Charging Cable