Thank you for viewing. WAVEWAVE EMS POCKET HEAT NECK This is the model before the current one, as I bought it last year. I've used it a few times, and its operation has been confirmed. It's in good condition, but please refrain from purchasing if you are sensitive to items stored at home. Only the main unit and charging cable are included. There are no instructions or case. Heat Neck, Low Frequency, Neck Relax, EMS, Heating, Warming, Lightweight, Shoulder, Neck, Relax, Neck-worn, Wave Wave Instant purchase OK!