Description About Product The QW18 smart wristband with sensor is used to monitor heart rate and blood pressure, regularly monitor heart rate and blood pressure, accurately analyze and record measurement data, and provide reference prompt historical data. QW18 smart bracelet is in line with the international IP67 waterproof and dustproof grade standards, can play a protective role for temporary immersion, hand wash or shower can be worn (temperature can not exceed 45 °C), effectively put an end to the corrosion of cosmetics, daily necessities, sweat and so on. Due to the powerful and full-color IPS screen of the QW18 smart bracelet, it is a good test to increase lifetime power consumption. In order to ensure a long enough standby life, it is equipped with a 90mAh large-capacity battery and advanced design of low-power chips. Support Bluetooth 4.0, RAM/ROM:512KB RAM+64KB ROM 1.5-2 hours charge time, 15 hours standby time Some Specification Model: QW18 Bluetooth chip: BK3431Q, Bluetooth version: 4.0 G-SENSOR: Support Heart Rate Sensor: Support Blood Pressure Sensor: Support RAM/ROM: 512KB RAM+64KB ROM Waterproof level: IP67 Wristband wearing range: about 14-20CM / 5.51-7.87in LCD specification: 0.96 color screen Resolution: 80*160 Battery capacity: 90mAh Charging method: USB direct charging. MOS tube charging, 5V 0.01A-0.3A Charging time：1.5-2 hours Standby time：15 hours Accessories: Instruction Manual*1 Charging Cable*1