Supersonic ECG + PPG Smart Sports Watch – (Black Silicone Band) 1.3″ HD LCD Touch Screen Display Screen Resolution: 240 x 240 pixels, Built-in BT 4.0 Allows You to Connect to Your Smartphone or BT Devices, Compatible with Android 4.4 & iPhone 8.0 Applications, Double Hearth Rate Monitoring, ECG Monitor, Blood Pressure Monitor and Heart Rate Monitor Record it and share it with Your Doctor via PDF, ECG Sensor: TI 129X Medical Chip, PPG HR Sensor: HRS 3300, Tracks Steps, Distance, Calories Burned and Active Minutes, Camera, Call Reminder, SMS Messages Reminder, Alarm Reminder, Remote Control for Camera (Shake it to take picture) Monitor How Long and Well You Sleep, Track Your Phone of Watch If You Misplace It, Full Touch Display, Simple and Easy to Use Application (WearHeart) RAM: 128MB, Waterproof: IP67, Built-in Micro USB 2.0 Port, Rechargeable Lithium-ion Polymer Battery (200mAh).