Warming Hand Massager, Air Compression DeviceRhythmic Air Compression This hand massager is constructed from ABS material. To operate, you place your hand inside the device, which uses air pressure to create a rhythmic motion. This targets the fingers and palm. Dual Power and Warming Function The massager offers two power options: connection to a wall outlet via the adapter, or power from four AA batteries for portable use. The unit includes a mild warming function. Design and Application The