Color: Gray 3-in-1 Neck Massage Pillow This neck massage pillow has three functions: vibration massage, constant temperature heat application, and electric stretching traction. It can effectively relax the muscles in the shoulders and neck, and relieve pain. Note: This neck massage pillow is a plug-in product. Before use, please insert the power cord first. Ergonomic design Designed according to the ergonomic curve, it can perfectly fit the contours of your shoulders and neck, and provide good support for your neck. The comfortable cervical angle also helps correct problems such as the correct cervical curve and forward neck tilt. 30-Minute Pain Solution Proven to alleviate chronic neck stiffness, reduce headaches caused by poor posture, and improve blood circulation within 30 minutes per session. Power supply method: It adopts the USB Type-C interface power supply mode and is equipped with a 1.5-meter data cable. To prevent safety accidents caused by overloading of the battery pack, our product does not use a battery pack, thus ensuring greater safety and reliability during use and becoming a reliable helper in your daily life. Usage Instructions 1. Press and hold the power button to turn on or off the lumbar support device. Once set to the automatic mode, it will automatically switch according to the sequence of vibration, inflation and heat application modes. 2. Press another button to activate the manual mode. A short press can select the mode. The blue light flashes to indicate the vibration mode, the green light flashes to indicate the inflation mode, and the red light flashes to indicate the heat application mode. Note: Please read the user manual carefully before use.