3-IN-1 TENS Unit Muscle Stimulator — Combines TENS, EMS, and MASSAGER functions for drug-free muscle stimulation and pain relief. Features independent dual A/B channels to treat multiple areas simultaneously with 40 intensity levels and 28 targeted modes for shoulders, back, arms, thighs, and more. The upgraded color display ensures effortless control, while premium electrode pads provide precise coverage for various body parts. Perfect for natural pain management, relaxation, and muscle recovery—recommended by professionals for safe, effective use.