Please note that this product does not have batteries, you need to buy 2*AA batteries to use it, or plugged in by USB. Thank you.<br/>1.Description:<br />Wrist Blood Pressure Monitor Portable Sphygmomanometer Heart Rate Alarm with Automatic Digital LCD Display Intelligent Pressurization Voice Broadcast Smart Electronic Device<br/>2.Features:<br />- Intelligent Pressurization<br />- One-button Measurement<br />- LCD HD Display<br />- English voice Broadcast<br />- Heart rate alarm<br/>3.Parameters:<br />Item name: Wrist Blood Pressure Monitor<br />Color: White<br />Measurement method: Wrist type<br />Measurement of wrist circumference: 13.5-19.5 cm<br />Display mode: LCD digital display<br />Memory function: Two groups of 99 memories<br />Blood pressure: 0kPa-37.3kPa(0mmHg-280mmHg)<br />Heart rate: 40/min-195/min<br />Measurement accuracy: static pressure: ±0.4Pa(±3mmHg)<br />Heart rate: With 3% of the read value<br />Operating environment: Temperature 5~40℃, humidity≤85%<br />Voltage: 3V<br />Battery: 2xAA battery (Not included)<br />Product size: 7.56*6.84*3.1 cm<br />Product weight: 110 g<br />Package size: 9.6*9*12 cm<br />Package weight: 280 g<br/>4.Note:<br />There is a little of difference according to manual measurement.<br />Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.<br/>