Feature:1. Two-person memory records, 99 groups of memory values can be stored, scientific management of blood pressure.2. Voice prompts during the measurement to stop the elderly from being incapable.3. It can measure your blood pressure and pulse at the same time.4. Wrist measurement, not need to take off sleeves, easy to measure, fit and reduce errors caused by wearing.5. With large LCD display screen for easy reading the data.Specification:Specifications:Voltage: 3VStorage temperature: -20℃~50℃Storage humidity: 15%~90%Operating temperature: 10℃~40℃Operating humidity: 40%~85%Display: LCD digital displayMeasurement method: pulse scan method / oscillometric methodMeasurement range: Hypertension/low blood pressure: 20mmHg~280mmHgPulse rate: (40~200)/minAccuracy: Preesure: ±3mmHg (within±0.4kPa)Pulse rate: accuracy ±3%Memory: 2 x 99 groupsEnergy: 2 * AAA Cell(not included)Item Size: 75.6 * 68.4 * 31mmPackage Weight: 280gPackage Size: 120 * 96 * 90mm.Package List:1 * Blood Pressure MonitorNote:Powered by 2* AAA cells, which is not included, customers need to buy 2* AAA cells to use.