Features 1. Slim, lightweight, only 17.5g, beautiful and strong appearance, TPU wrist strap. 2. PMOLED black and white screen, 88*48 pixel resolution, capacitive touch keys, POGOPIN charging. 3. Support Android 4.4+/iOS 9.0+ devices. 4. Running posture monitoring, professional running guidance. 5. Call: Remind/refuse, message reminder. 6. 6 axis sensor, detect distance highly precision. 7. 50m waterproof, swim, rain and wash hands without removing wristband, convenient to use. 8. Built in 77mAh battery, working 14 days in normal using, 21 days standby, 2 hours charging full. 9. Support Bluetooth V4.0, connecting distance up to 10m. 10. Support sleep monitoring, sedentary reminder, find phone. 11. 40.5 mm x 14.8 mm x 11.2 mm(body); 226.15mm x 17.70mm (wristband). 12. Weight: About 6g (without wristband)/ about 17g (with wristband). Package List 1. Bracelet x 1 2. Charging base x 1 3. Wristband x 1 4. Running shoe buckle x 1 Specification: Package Weight One Package Weight 0.12kgs / 0.27lb Qty per Carton 50 Carton Weight 6.20kgs / 13.67lb Carton Size 42cm * 32cm * 32cm / 16.54inch * 12.6inch * 12.6inch