For Users With Larger Arms Cuff Fits Arms 12.6 - 20.5 In Circumference Includes X-large Arm Cuff 4 Aa Batteries And Free Bonus Travel Pouch 3 Year Warranty Large High Performance Motor Easily Inflates X-large Cuff For Fast And Accurate Readings Digital Lcd Display Who Classification Indicator 90 Memories Automatic Power Off Irregular Heartbeat Detector Average Of Last 3 Measurements Micro Usb Power Port Allows Unit To Be Powered With Any Usb Port Including A Laptop - Great For Travel! (cable Not Included) Unit Weight: Approx. 230g (not Including Batteries) Unit Dimensions: 5.1 L X 3.9 W X 2.5 H Measurement Range: Pressure (0 Mmhg-280 Mmhg) Pulse (30-160 Bpm) Measurement Accuracy: Pressure (3 Mmhg) Pulse (5% Of Readings) Cuff Measures 26.8 X 5.5 And Fits Arm Circumferences 12.6 - 20.5