Neck and Shoulder Massager (similar models like FH-670 or FZ-831 or CY-818), designed to relieve tension and tight muscles in the neck, shoulders, and body. Key specifications and features of the device: Massage Method: Utilizes kneading technology (similar to 3D/6D technology) to simulate deep tissue massage with hands. Features: Typically includes multiple speed or intensity levels, and a heating function (warmth) to soothe muscle pain. Design: Ergonomic design, wearable or placeable on shoulders and neck, and rechargeable via USB. Uses: Suitable for offices, home, or travel to relieve daily stress. [1, 2, 3, 4, 5, 6]