Brand Name: dingguaguaCommodity Quality Certification: 3CCommodity Quality Certification: ceCommodity Quality Certification: FDAMaterial: ABS + AcrylicItem Type: Blood PressureModel Number: BSX501Size: Blood pressure measurementApplication: ARMPower By: USB Interface or 4*AA 1.5V BatterySuitable Wrist Circumference: 22-40cm / 8.66-15.74inDisplay: LCD ScreenMeasuring Place: Upper Arm