Vive Precision Blood Pressure Machine - Heart Rate Monitor - Automatic BPM Upper Arm Cuff - Sphygmomanometer Heartbeat Measurements For Hypertension Diagnosis and Accurate Pulse Readings (Silver) Blood pressure monitor Wide range arm cuff (Fits Arms 8.75&#034;- 16.5&#034; or 22-42cm) Four (4) AAA batteries Illustrated User Manual