Bluetooth Connectivity 1.85 IPS Full HD Touch Display Bluetooth V5.1 Ip67 Waterproof Rating Heart Rate Monitor (Bpm) Blood Pressure Monitor / Sp - O2 Blood Oxygen Builtin Rechargeable Battery FitCloudPro APP Android / i - OS APP Support General Display 1.85 IPS Touch Resolution 240 x 280 Bluetooth 5.1 Bluetooth Range 8.10m Chipset Realtek8762DT+HN333 Heart Rate Hx3605 ROM 256Kb RAM 192Kb Flash 128Mb GSensor Sc7A20 Dustproof / Waterproof Ip67 Material Silicone, Tpu, Abs, Alloy Metal Message Reminder Message Push, Multi - Language Display, Call Reject, Incoming Call, Text Push Sport and Health Functions Activity Record, Sleep Monitor, Heart Rate, Blood Pressure, Blood Oxygen, Sport Mode, Sedentary Reminder, Pedometer, Breath Training Smart Assist Functions Alarm Clock, Audio Bluetooth, Music Control / Playback, Find Phone, Remote Camera Control, Stopwatch, Weather Forecast Watch Face 100+ Selectable via APP Push Charge USB Battery 260m - Ah Li - Po Working Time 3.7 days Standby Time up to 20 days APP FitCloudPro Phone Compatibility Android 5.1 above, IOS 8.2 above