Smartband 4.4 with a heart rate monitor - Smartband is a wristband for active people that monitors not only all physical activities, but also sleep phases. An additional advantage of the bracelet is the built-in heart rate monitor. Functions:PulsometrKrokomierzMonitor Sleep LocatorSelf-timerCalorie counterDistance counter Specifications:Kompatybilny with iOS 8.0 or higher & Android 4.4 or higherBattery: 60 mAh (lithium-polymer)86'' OLED screenBluetooth 4.0Waterproof IP66Application: FlagFit Engraving on the clasp:7x7mm