EVERTOP Handheld Electric Body Relaxing Massager Tissue Percussion for Back, Shoulder, Arm, Foot Deep kneading therapeutic percussion massager helps relax and relieve muscle tightness or soreness Moves around whilst shaking and making bubbles to relax your back, shoulder, it helps relieve tension and soothe sore muscles, aches, and strains The ergonomic design allows you to do massage by the movement of vibrations at different parts of the human body: head, shoulders, back, arm, waist, hips, thighs, legs, feet etc Rechargeable battery and cordless: 3.6V NI-CD 1.3 and it can work after full charge up to 3 hours and gives no barriers from cable Sleek ergonomic design, makes it easy to use by just about anyone