Docooler D21 Smart Watch Heartrate Wristband Bracelet 0.66" OLED Touch Screen Text Incoming Call Notification Pedometer Sedentary Reminder NFC for iphone Android 4.3 iOS8.0 or above Exquiste Workmanship, unique and beautiful round design. Silk Smooth and soft touch on the surface, extreme comfortable grip feeling, anti-dirt, and anti-scratch. 0.66" 64*48pixel screen, simple operating system, just move your finger from left to right, so easy. Lightweight and portable, capacitive touch screen with perfect view angles, quick in reaction with high sensitivity. Functions: support calorie comsuption, pedometer, sedentary reminder, incoming call sync reminder.