Automatic Upper Arm Measurement - Uses oscillometric technology to measure systolic pressure, diastolic pressure, and pulse. The color indicator helps place each result in an easy-to-understand range. Two Cuffs for Medium to Extra Large Arms - Includes M/L 9-17 inch and XL 13-21 inch upper arm cuffs. Measure your upper arm and choose the matching cuff size before use. Clear Display and Reading Recall - The large backlit LCD shows systolic pressure, diastolic pressure, and pulse clearly. Recall stored readings to review previous measurements and follow changes over time. Simple One-Touch Operation - Wrap the cuff as directed, sit quietly, and press START/STOP to begin. The compact monitor is designed for routine home measurement and easy packing for travel. Power Options and Package Contents - Includes the monitor, M/L and XL cuffs, USB-C cable, wall adapter, and instruction manual. Use 4 AAA batteries or continuous USB-C power; the monitor is not rechargeable. UPC 717211695474 ASIN B0DJSMCHXJ Size Medium/Large & Extra Large Brand Name AQESO Model Name U83Z Unit Count 1 Count Manufacturer Shenzhen Urion Technology Co., Ltd. AQESO Model Number U83Z Item Highlight Includes M/L and XL cuffs for 9-21 inch arms, plus a backlit display, one-touch operation, and battery or USB-C power. Manufacturer Part Number U83Z Item Dimensions L x W x Thickness 5.1 L x 4 W x 2 Th Software Update Supported to Date unknown