Fully rechargeable, no extra batteries needed. Plug with equivalent 5v/6v charger (e.g mobile phone charger, power pack, laptop port) Large LCD Display Back Light & Voice Broadcast. 3 colours screen display to indicate measurement result. Read out result, let you know if you are healthy or not. Accurate and Reliable Package Includes:Arm Blood Pressure Monitor, Arm Cuff 22-32cm, User Manual & USB Cable
