Touch screen to switch user The side rounded non-slip buttons are built-in and more solid,and have basic functions such as medical grade precise detection, warm voice prompts, high voltage warning, correcting operating errors, multi-person switching, analyzing historical trends, etc. Measuring range Pressure 0-295 mmHg (0-39.33kPa) Pulse rate 40-199 beats / min Pressure: T3mm Hg (+ 0.4kPa) Pulse measurement accuracy: +/- 5% of reading Power supply 2 AAA batteries 3V Low power consumption settings 5.2V + 0.1V invite low power, 4.8V + 0, 1 V shutdown Blood pressure test current 30 mA when the air pump valve is not working Shutdown current 50uA Automatic shutdown time 1 minute Delivery quantity: 1 * blood pressure monitor