Omron M1 basic automatic blood pressure monitor is especially designed to reduce the difficulty and discomfort associated with measuring blood pressure with a manual device. FEATURES: ‣ Compact and lightweight design. ‣ Easy one-touch operation. ‣ Clear and large display. ‣ Memory for the last reading. ‣ Irregular heartbeat detection. SPECIFICATION: Weight: 0.59 kg Cuff Size: 22–42 cm Power Source: 4 AA batteries