How to charge?1. slide the power switch to "on" position (the switch is on the left side of device)2. plug the usb charging cord attached and connect to the wall adapter/phone adapter or your computer.3. when charging completed, six squares will stop flashing and keep bright.note: you can not take a measurement while charging.
storage data- 90 sets of measurement results memory for 2 user, which can display the average reading of the last 3 measurements, convenient for users to retrieve data comparison
automatic off- automatic turn off after 1 minute of manual shutdown or no operation, easy and convenient to operate1. it is more accurate to measure your left wrist. during the same time period, the measurement data of the left and right hands will be different.2.please don't drink alcohol or coffee, eating, smoking, exercising and bathing in 30 minutes before taking a measurement.3.please take a measurement at the same time each day so that the data can be compared in a valuable way