When it comes to finding a high-quality wrist blood pressure monitor, the Wristech™ Color Changing Wrist Blood Pressure Monitor is a top choice. It offers an easy and convenient way to keep track of blood pressure any time of day, anywhere and anytime. The bright white bezel makes it easy to locate, and the wrist band is comfortable to wear. To turn the device on or off, simply press the blue button. This activates the advanced blood pressure reading technology to calculate an individual reading, which pops up on the large LCD screen. Reading information includes the date, time, blood pressure and heart rate. The screen also features color indicators, including green, yellow and red. Each color corresponds to a health alert category with red being the most life threatening. Press the memory button to record up to 90 readings into memory for future reference. This blood pressure wrist monitor can be used by one person or two people. Wrist monitor requires two AAA batteries.