In fact, the products sold in the market have their own characteristics, or look at personal needs. Shoulder and neck device can relieve the work pressure of office workers, housework of housewives or shoulder and back pain caused by stiff neck during sleep. When using the shoulder and neck device, you should also pay attention to rest for an hour after meals. Drink 150CC of water before each use, and 250CC of water after each use, and each use should not exceed 30 minutes.