Battery Charging: Our wrist blood pressure monitor uses USB recharging, included 320 mAh lithium battery, removing the hassle of changing batteries and saving you money and timeEnglish Voice Broadcast: The blood pressure monitors wrist is equipped with an English voice announcement function. There is a data voice broadcast after the measurement is completed.Turn off the voice: Turn on the wrist blood pressure monitor, tap the power button until the screen displays SP and a speaker icon appears in the lower left corner, then long press the power button until the screen displays OF to turn off the voiceDual Memory Mode: The wrist blood pressure monitor has a dual-user recording user measurement data system, and each user can record the latest 99 data, which is convenient track your blood pressure health for yourself and your family. Tips: The difference between the blood pressure at the wrist and the arm is usually between 10-20 mmHg. The difference between the blood pressure at the wrist and the arm is usually normal. Taking the average of 3 measurements will be more accurateWrist Blood Pressure Monitor: Blood pressure monitors wrist is more portable than traditional arm sphygmomanometers, and it comes with an extra-long cuff. The wrist bp cuff can be adjusted (from13.5 - 19.5cm), suitable for most people; at the same time, our bp cuff material is comfortable and elastic, and will not squeeze our wrists strongly (Do not wrap too tightly)Upgraded Touch Screen: The wrist blood pressure monitor is designed with a full screen touch design, with a larger LED screen and touch screen buttons, clear readings, and you can can visualize the blood pressure measurement results. Different blood pressure datas show different colors