Bareas&reg; S3 Smart Wristband 24-hour Monitoring Exercise, Hr / Ecg, Uv and Temperature Detector, Call Reminders, Support Android4.0 / ios7.0 above systems Smart Watches (Black ) Silicon Valley top heart rate sensor chip, Miniature variety of vital signs sensors and high-performance 3-axis accelerometer. Hand ring + App combinations, 24 hours to detect heart / ECG, UV and temperature, tailored fitness program. Mobile data synchronization, pedometer, sleep management, strong compatibility, multi-color optional fashion. Waterproof rating IP65, OLED display, extended battery life. 7 days standby on a single charge. High-quality material, medical grade TPU, materials are made of high quality silicone strap, soft and comfortable to wear.