20 Levels Wireless Pain Treatment Device for Pain Relief & Injury Recovery

[Pain relief]Natural, drug-free and highly effective electronic TENS units and pulsed muscle stimulation effects for joint pain relief, back, knee, and more. [Reusable electrode pads]4 reusable electrode pads allow you to use them for a long time on any body part. [Portable]Wireless design,linghtweight and rechargeable to use anytime. [Safe]40 minutes automatic off with heat protection.