Using oscillometric blood pressure measurement accurately measure blood pressure 100% brand new and high quality Intelligent pressurize, live non voice (optional), serial port (optional) Power voltage detection, low power consumption LCD digital display, legible Product description is a legal trademark that has been registered. Only authorized sellers of have the right to sell the products. will take you to a wonderful shopping paradise. Name: blood pressure monitor color: white material: plastic Model Number: krf042559 Item Type: Blood Pressure Application: Wrist Product size: 71 * 73 * 32mm (strap not included) Bracelet range: 135 ~ 195mm Display: LCD digital display screen Measuring range: blood pressure 0 ~ 280mmHg Pulse 40 ~ 199 times / min Memory capacity: 90 sets of measurement and time data Reduce passage: solenoid valve control pressureMeasuring interval: 1mmHg Smart pressure WHO warning message function Dual mode, each of 90 sets of memory measurementsthe overpressure counter function. an irregular heartbeat spike the clock function Compression method: automatic pressurizing pumpReduce the channel: solenoid valve control pressure Measurement error: blood pressure 3% of heart rate 5%Memory capacity: 90 sets of measurement and time data Pressure sensing: solid state pressure sensor Power su pply: 2 AAA batteries Measuring interval: 1mmHg Operating temperature and humidity: ~ 40 C 10 C / 40% ~ 85% RH Temperature and humidity conservation: 50 C -20 ~ C / 15% ~ 90% RH Weight: 200g Package contents: blood pressure monitor 1 * Only the above package, other products are not included.Note: shooting light and different screen may cause the item's color in the picture a little different from the real thing. The allowable measurement error is +/- 1-3 cm. Ingredients Plastic