OPTA RSB-124 Massalia Bluetooth ECG PPG Fitness Watch| Blood Pressure Multi-Sport Mode| Heart Rate | Waterproof |1.14 inch Color Screen Fitness Tracker for All Android/iOS

FUNCTIONS: Heart rate, Heart rate variability (HRV), Blood pressure, Breathing guidance, Pedometer, Sleep monitoring, Alarm reninder, Various clock faces replacement available from App, Altitude, UV, air pressure, weather (push through the network), Multiple sports modes: walking, running, cycling, hiking, football, basketball. APP name HPlus APP compatibility Requires iOS 8.0 or later / Androld 4.4 or later