Blood Pressure Monitor, Waterproof Smart Watches - Heart Rate Tracking Clock (Black & Black) Product is shipped based on color or size of the main product image page. Color: Black and Black Blood Pressure Monitor, Waterproof Smart Watches - Heart Rate Tracker Clock . Product functions: heart rate, blood pressure, blood oxygen, sedentary calorie distance, alarm clock, sleep monitoring, find the phone, find the clock movement. Specifications: Material: Silicone Battery Capacity: 150mAh Battery Capacity Body Memory: 258MB (inclusive) -10m (inclusive) Communication Function: Not Support Strap Material: Silicone Applicable to: Compatibility general with phone version: IOS8.0 and Android 4.4 Above BT version: 4.0 Display: 1.3 SJQ team: Your satisfaction is our pursuit.