Deep Tissue Massager, Portable Massager, Intelligent Variable Speed Use for Back, Neck Power Source Battery-Powered, Handheld Percussion Massage with Six Reusable Heads for Muscle Relaxation ZWMBYN brand Acrylonitrile Butadiene Styrene is the powered material. Unique characteristic Transportable Benefits of the Pain Relief Product: Particular Applications Modern Style Deep Tissue Massage, Muscle Relaxation, and Pain Relief