Specification:Functions: Step counting， ranging， calorie consumption management， sleep management， time display，event reminders (water， medicine， etc.， meeting custom)，clock display， alarm， sedentary remind vibration self timer clock.Color: Blue， Orange， Mint blue， Light green， BlackStandby time: Normally use for 2-3 days， standby for one week.Compatable with: Android 4.3 or above， Ios 6.1 or above (such as Phone 4S， Phone 5， 5C， 5S)，Display: OLED64*32 PK Fitbit & Mi bandPCB size: 34.6*14.5*0.8Battery type: 301425Bluetooth chip: Quintic QN9021The main chip: Quintic QN9021Sensor: G sensor PK Fitbit & Mi bandMemory: 64KB RAM + 64KB ROMScreen: OLED 64*32Bluetooth version: 4.0BLE (low power consumption)Appearance material: Aluminum alloy shell， soft rubber strapModel: TW64 same style as Fitbit & Mi band Functions:Tracks steps: Record and track steps accurately.Distance measurement: Measure your daily walking distrance precisely.Calorie consumption management: Caculate the consumption of calorie， record the daily burn-up calorie.Sleep quality monitor: Monitoring your sleep cycle automatically， record the quality of sleep.Message reminder: When new message arrived， the smart wristband will remind you by vibration ， in that case you won't miss any timely message.Call reminder: When incoming calls are not answered in certain time，the smart wristband will remind you by vibration.Reminder: Setting reminder for drinking， taking medicines， meeting， sitting for too long or other customized alarm.Time display: Sync your smart phone with LED digital time display.Package includes:1 x TW64 Smart Wristband1 x Charging Cable1 x User Manual