Original! DFit D21 Heart Rate Monitor Smartband Waterproof Swim Smart Band Bracelet Health Fitness Tracker for Android and iOS

 Product Specifications:

Main ChipsetNRF51822
SensorTriaxial Gravity Sensor
LanguagesChinese， English
OSAndroid4.4 or higher， iOS 7.0 or higher
LCD0.66"OLED
LCD Pixels0.66" 64*48
BT VersionBluetooth 4.0
BT Connection Distance8-12m
Battery Capacity:80mAh
Standby Time7 days
Charging Electric Current200mA
Charging Type:Touching Point Charging(Clip Charger)
Average Working Current6mAh
Average Standby Current:Less than 40uA
Working Voltage:3.7V
Working Temperature:-20~70
Woriking Humidity5%~95% non-congealable
Dimension23.7*12.2*(164~232mm)
Colors:Black， Pink， White， Purple
Main Body MaterialPC
Watchband MaterialSilica Gel
Net Weight28g
Waterproof GradeIPX65

 Product Functions List:

Time DisplaySupport
Date DisplaySupport
Steps DisplaySupport
Distance DisplaySupport
Calorie Consuming DisplaySupport
Calling ReminderSupport
Message ReminderSupport
Sitting AlertSupport
Photo-taking ControlNot Support 
Music ControlNot Support 
Sleeping MonitoringSupport
Bluetooth ConnectSupport
Battery-charging ProtectionSupport
KeypadNot Support 
Anti-lost of PhoneNot Support 
Heart Rate MonitoringSupport

 Precise heart rate test smart bracelet for your health.