The Homedics upper-arm 500 Series blood pressure includes a Voice Out Guide that gives verbal instructions to help you use the device and have it read out the results. It also features easy one-touch operation, irregular heartbeat detector, smart measure inflation technology, excessive body motion detector, and Bluetooth wireless technology that syncs to the free HoMedics Health+ app. Stores up to 120 memories for two users and includes an arm cuff, storage bat, and 4 AAA batteries.