Experience drug-free pain relief with the AVCOO 3-in-1 TENS Unit, combining TENS, EMS, and Relax functions to target soreness and pain in elbows, shoulders, back, knees, legs, and more. Offering 40 intensity levels and 24 pre-programmed modes, this versatile device delivers smooth, customizable therapy with adjustable duration up to 90 minutes. Dual A/B channels allow use of 2 or 4 pads...