Review on TENKER Muscle Stimulator: 24 Effective Modes For Pain Relief & Muscle Strength With Rechargeable TENS Machine And Electrode Pads by Reggie Stewart

The Tens unit works well, however the instructions are poorly written. The instruction state to use 1/4 inch wire& make sure to use 1 + and 1-,different color indicates which is positive & which is negative. The wire that is for using only 2 pads are both white. The wire used for 4 pads have 2 blue & 2 white correctors but no indication which is + or -. When I use the wire for two pads I insert the wire into the right port I feel nothing i have to insert it into the left port to feel anything. I assume that the right port is for using the wire that connects to four pads.The instruction could of been written much better.