Cordless and Rechargeable. The shiatsu shoulder massager can be powered through the built-in rechargeable lithium-ion battery, which offers sufficient power to sustain a 2.5-hour cordless massage (charging time needed:≈3 hours). Use this massager anywhere and anytime. Free Travel Bag for Easy Transport. Comes with an exquisite bag designed with elegance that helps keep dust off the product and makes it convenient to carry, i.e for when you want an outdoor relaxation session. 3 Intensity Massage Levels. Choose an intensity level for the massage experience that suits you best. This massager applies acupressure to specific points with a deep kneading massage so mild pain might be experienced for first time users. Please start using the product at the lowest intensity level. Advanced & Secure Heat Function. Equipped with a heating system that delivers gentle warmth to assist you in relieving tension, stress, and fatigue. Meanwhile, a 15-minute auto shutoff feature and overheat protection system will further enhance the safety of the product. 8 Deep Kneading Shiatsu Massage Nodes. 8 massage nodes (4 big ones and 4 small ones) of this versatile back massager will effectively soothe muscle fatigue and relieve stiffness on multiple body parts (neck, shoulders, back, arms, waist, legs, spine, feet, calves, hamstrings, and thighs); The massage nodes provide bidirectional massage, clockwise and counterclockwise