Product Features:99 sets of storage( 2 people)，IHB arrhythmia detectionintelligent presurize，non voice Power by: 2 * AAA batteries(Not include)Voltage power detection，Low power consumptionDimention:77.5mm68mm30mm (not include Wristbands)Display:Digital liquid crystal displayAccuracy:3mmHg(0.4kPa) Fashionable outward，Light and compact，Easy to carry，suitable for health care(for medical field，familes and adult)Auto power off:Auto power off when no operation for 1 minutePackage List:1 x Wrist Blood Pressure Monitor (Batteries Not include)Note:This item come without retail box，but we will pack well before shipping!