Power: AC 100~240V 50/60Hz DC 12V/2.5A Power consumption: 30W Functions: Portable kneading massage cushion moving up and down of your back in 3 levels-full, upper and lower 3 levels vibrating seat massage increase your lower part circulation Simulates the hands of a professional massage expertise Customized massage ion in your hand controller Seat vibration: Vibration includes low/medium/high levels Demo: brief demonstration lower to upper back massage for just one-minute-demo