Size: Strap 22cm x Screen 1.85". Blood Pressure: Also features non-invasive blood glucose testing which can help you keep track of your blood pressure. Bluetooth: Connect via BLE4.0 Bluetooth and take calls, play music, and more! Tracker: Offers 24-hour monitoring of your heart rate so you can spot if you ever have an unhealthy or abnormal heart beat/rate. Watch: Get a Y9PRO smart fitness watch. Screen: With a 240 x 280 resolution display. Y9Pro Smart Fitness Watch | Living Social | Living Social