Feature:1. Wrist measurement, not need to take off sleeves, easy to measure, fit and reduce errors caused by wearing.2. With large LCD display screen for easy reading the data.3. Voice prompts during the measurement to stop the elderly from being incapable.4. Equipped with a USB cable, energy once, standby for 30 days.Specification:Features:Wrist measurement, not need to take off sleeves, easy to measure, fit and reduce errors caused by wearing.With large LCD display screen for easy reading the data.Voice prompts during the measurement to stop the elderly from being incapable.Equipped with a USB cable, energy once, standby for 30 days.With it, you can measure your bloo d pressure anywhere and anytime.Specifications:Material: ABSColor: BlackApplicable Wrist Circumference: 135-195mm / 5.31-7.68inMeasurement Range: 0-280mmHg (0-37.33kPa), Pulse rate: (40~185)times/minAccuracy: Preesure: ±3mmHg (within±0.4kPa), Pulse rate: accuracy ±5%Energy: 1 x Lithium cell, 3.7V 300mAh (included)Item Size: 81 * 69 * 31mmPackage Weight: 106gWorking air pressure: 70-106kPaTransportation and storage barometic pressure: 500-1060hPaCharging po wer: 5V1APackage Size: 100 * 80 * 80mmPackage weight: 200gPackage List:1 * Blo od Pressure Monitor1 * USB Cable1 * User Manual1 * Storage BoxPackage List:1 * Blo od Pressure Monitor1 * USB Cable1 * User Manual1 * Storage Box