Commodity Quality Certification: ceSize: 1 setMaterial: PlasticApplication: WristItem Type: Blood PressureDisplay: Liquid crystal display screenpower supply: AAA Batteries*2(NOT INCLUDED)Pressurization: Automatic Pressurization ModeFeature: Health Care Portable HomeProduct Use: Health MonitorFeature 2: Russian/English voiceFeature 3: Electronic air release valveAir leakage device: Air relief valvePanel material: Acrylic