Features: There are 2 types, one is with backlight, another without, choosing according to your needs. This monitor can store readings for 2 users for up to 60 readings each and utilizes a Memory Average Function for the last 3 readings per user. Blood Pressure Monitor automatically inflates and deflates to the appropriate level, utilizes excessive body motion detection and features an irregular heartbeat detector to ensure you get an accurate reading, every for time. Perfect for use at home or on the go, travel anywhere with this battery-operated blood pressure monitor. Smartly designed to facilitate easy, clear readings: blood pressure cuff features a large LCD display to allow for most accurate readings in less than 30 seconds. Specifications: Material: ABS Size: 9.5x9.5cm/ 3.74x3.74 in Application: wrist Package Includes: 1x Blood Pressure Monitor( battery included) note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.