A normal Neck massager will have Shiatsu Massage, Heating Function. Some of them will add a vibration mode. They will usually be Plug and Play, not rechargeable, but the massage strength is better, and massage area bigger.

The New Tens Neck Massager will be portable rechargeable. It has Heating function, and Tens Therapy, can effectively relieve neck pain. Has a certain physiotherapy effect, but not suitable for everyone.