Features: Relax your neck after several hours of work before the computer. Eliminate the overload of the muscles of the spine and knees after training. This will relax deep muscles in the spine, helping to relieve tension or pain in the neck, shoulders or waist. Wonderful combination of different pulses signals will make you have the true feeling of acupuncture, stroking, massage and scrapping. Get rid of back pain or sciatic pain in 15 minutes. This machine improves your posture while also eliminating neck and back pain or tension. Ergonomic design, this machine can easily be placed on the back, neck, sacrum and so on. Feeling light and in good posture greatly improves your mood, quality of life, motivation, and overall health. Specification: Item Type: Electric Cervical Spine Corrector Material: Plastic + Silicone Item Color: As Pictures Shown Battery: 3 * AAA Batteries (Not included) Item Size: Approx. 18 * 9 * 4.5 cm / 7.1 * 3.5 * 1.8 inch Package Weight: Approx. 138 g Package Include: 1 * Electric Massager