HQ Smart Bracelet Bluetooth Activity Wristband Intelligent Sports Watch Step Gauge Sleep Track Caller ID display (Black) Host with USB port charging, minimalist design, wireless charging Has a sleep monitor, calculate the number of steps, calorie consumption records and mileage calculation functions With OLED screen, display the number of steps, calories and time information Has a silent vibrate mode, with three-color LED lights, according to the amount of exercise reminder. Weight only 20 grams, wearing ignore its existence. Keep Your Phone in the Pocket: You'll stay constantly connected to your phone, receive messages and answer the phone call