Neck Massager functions: 1.The product installs two vibration massage balls, which do well-balanced vibrating massage on the cervical vertebra and the shoulder. 2.It has 3-level intensity options of light, moderate, and strong. 3.It can promote the blood circulation of the neck and the shoulder, improve metabolism, and thus dispel the fatigue. It allocates two kinds of plugs for the household and car use respectively. the velveteen dustcoat of the product can be unpacked and washed. 4.It is flexible in usage, convenient to be carried, safe and reliable.