Smart Bracelet M2 Heart Rate Monitor Pedometer Smart band Tracker Waterproof Bluetooth Smart Wristband For iOS & Android For Men & Women Features : Display : 0.42 inch High definition OLED screen with backlight, touch to operateShort message : SMS Bluetooth sync reminder Time : OLED show 24style Pedometer : Motion planning, step Sport, mileage recordSleep monitoring : Monitoring sleep quality Call Reminder : Vibration (Call SMS WeChat QQ, etc.)Charging interface : USB socket Standby time : 300 hoursAlarm Tips : Phone Settings (Clock)APP sharp : Movement condition Multi-function : Heart Rate Monitor, Pedometer(Calories, Distance, Steps), Sleep Monitoring, Alarm Clock, Anti-lost, Instant Notification.Heart rate : analog, S7000Touch : Touch mode button, High sensitivity touch-control ICIP67 water-proof for washing hand, water splashing etc. sensor : Low power acceleration sensor Specifications : Battery : Battery capacity : 70MAH / Standby time : 300 hour input voltage : 5V Weight : 6.9 grams net weight CPU : Advanced ST17S25, quick data process. Material : Plastic ABS watch strap : TPU, total length : 235mm width : 19mm Bluetooth : Bluetooth4.0 /compatible(Compatible for Android 5.0 and IOS 8.0 or above) Support 13 kinds of language : English, French, Italian, Spanish, Polish, Portuguese, German, Dutch, Turkish, Arabic, Persian, Greek, Russian. Product size : 235*17mmProduct weight : 14g Standard Packing : 1 x Watch device1 x One battery1 x User manual