Prosepra Hands-Free Ems Neck Massager combines Ems, Tens, and multiple massage techniques. With 4 modes and 15 intensity levels, it offers customizable relief. Plus, enjoy hot compress feature for soothing muscle pain. Experience total relaxation and relief for both daily stress and physical strain.ems (Electrical Muscle Stimulation) and Tens (Transcutaneous Electrical Nerve Stimulation) use low-frequency micro-currents to stimulate muscle sensory nerves, induce muscle contraction, facilitate deep relaxation, and effectively alleviating pain sensations.Features•4 Massage Modes: kneading, beating, scraping, combined massage mode•15 adjustable intensity levels.•Hot compress function. 3 temperature levels. Max controlled at 45C, 113F. Heat to relieve muscle spasm and stiffness, enhance local muscle blood circulation, and boost metabolism.•Micro surface massage head. All around fit neck.•Scientific design. Cnc display screen.•Portable: light weight and hands free.