Easy-to-read large LCD Display - Easy to read with large LCD display. Simple large numbers makes it more clearly to read. Accurately measure and easy to OperateFully automatic wrist blood pressure monitor, you can get the measurements by one-button operation.The professional blood pressure machine can detect accuracy readings. Two users mode &198 reading memory -With the built-in storage function,memory storage with date and time stamp allows you to review the last 99 readings/ double person with a touch of a button, it is the best gift for mom and dad. Fast reading - Less than 1 minute response.The cuff length is about 5.31-7.68 ( 13.5cm-19.5cm ), and the item requests 2 AAA batteries (not included). Features: Volume adjustment: You can adjust the volume of the volume, which is a major advantage of this product. Product screen: LCD display digital display screen, high-definition large screen, clear reading. Product parameters: Measurement site: wrist Measurement range: blood pressure 0~280mmHg (0~37.3kpa), pulse rate 40~195 beats/min Measurement wrist circumference: 13.5~21.5cm Measurement accuracy: blood pressure value 0.4kpa ( 3mmHg), pulse rate reading value 5% Working environment: Operating temperature: 10~40 Operating humidity: 40%~85%