The OMRON M6 Comfort comes with the Intelli Wrap Cuff - the easy way to get accurate results. It detects the possibility of Atrial fibrillation, enabling home monitoring of the condition and giving you peace of mind. It also takes 3 consecutive readings at 30 second intervals, then displays the average to give you a more accurate indication of your blood pressure Features: Intelli Wrap Cuff Technology - Accurate results in any position around the upper arm AFib Indicator - Detects the possibility of Atrial fibrillation, enabling homemonitoring of the condition 100 memories showing date and time of reading One button operation Irregular heartbeat detector Morning hypertension indicator Batteries required: 4 x AA batteries included Specifications: Dimensions: H:8.5 x W:19.1 x D:12.0 cm Colour: White Guarantee:3 Years Batteries Required: Yes Model Number: OMRM6COMFORTY19 Self Assembly Required: Yes