This is an Essential Item for those whom require blood pressure checks due to medical conditions or for the health conscious. New Technologies mean that the Monitor is not only highly portable when placed on the wrist the Device will inflate to the correct level. High Accuracy Automatic Compression & Decompression Easy to operate, Switching button starts the measurement Displays the Systolic, Diastolic Pressures & Pulse Large Easy Read LCD Display Screen Battery Operated (Requires 2 x AAA Batteries)| Battery Operated (Requires 2 x AAA Batteries