Please be kindly noted,the listed product is produced and distributed abroad and subject to the laws of its country of origin. One click measurement, heart rate and blood pressure monitoring, comfortable cuff, large screen, intelligent pressure, accurate measurement, small and exquisite, easy to carry. Features: With/without voice broadcast, D-C USB/4 AAA batteries powered. Measurement methods: arm type electronic sphygmomanometer, hypotensive measurement / oscillometry. Display screen: LCD digital display, the results show high / low voltage / pulse, large screen, clear reading. Blood pressure classification: WHO sphygmomanometers indicate the health status of blood pressure, which is convenient for users to accurately judge whether the blood pressure is normal. Intelligent compression: automatic compression and decompression, IHB heart rate irregularity detection. Clock function: year, month, day, hour, minute setting. Storage data: Double 99 groups of measurement results memory, can display the average reading of the last three measurement results, convenient for users to access data comparison. Automatic shutdown: manual shutdown or automatic shutdown after 1 minute without operation, which is simple and convenient. Unit conversion: conversion of blood pressure value in kPa and mmHg (the default unit is mmHg). Overpressure protection function: when the air pressure exceeds 295mmhg-20ms, it can automatically and quickly exhaust, which is safe and reliable. Error prompt function: it is convenient for users to find the cause of error. Low power detection function: detect low power under any working state, and LCD display will prompt low power. Specifications: Measurement part: upper arm part Measurement range: blood pressure 0 ~ 280mmhg (0 ~ 37.3kpa), pulse rate 40 ~ 195 times / min Arm circumference: 22 ~ 32cm Measurement accuracy: blood pressure value ± 0.4kpa (± 3mmHg), pulse number reading value ± 5% Measurement method: pulse scanning / oscillometry Storage environment: storage temperature- 20 ℃ ~ 50 ℃, storage humidity15% ~ 90% Working environment: operating temperature 10 ℃ ~ 40 ℃, operating humidity 40% ~ 85%  Closing mode: manual closing or after no operation Material: PC + ABS Display screen size: 41 * 61mm Battery model: 4 * 1.5V (4 AAA alkaline, not included in this package ) Number of memory groups: 99 pairs Package Weight: 412g / 14.5oz Package Size: 170*116*105mm / 6.7*4.6*4.1in Packing List: 1 * sphygmomanometer 1 * arm band 1 * storage bag 1 * English user manual