Neck Massager Motorized Memory Foam. Combining Visco Elastic Technology with soothing vibration. Soft, Heavenly Feeling. Cushioning Support of Memory Foam. Vibration Therapy. U- Shape Provides Extra Head and Neck Support. Adjustable Power. MATERIAL: Soft Cloth POWER: 2 "AA" Batteriess FUNCTION: Visco Elastic Technology Pressure Point Relief Adjustable Power Button