Photo 1 of 24 Modes TENS Unit Muscle Stimulator Machine with 8 Reusable Electrode Pads, 3-in-1 TENS Device with 40 Intensity Levels, 90 Min Timer, Back/Neck/Knee Therapy, Pulse 2-150Hz

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Photo 1 of 24 Modes TENS Unit Muscle Stimulator Machine with 8 Reusable Electrode Pads, 3-in-1 TENS Device with 40 Intensity Levels, 90 Min Timer, Back/Neck/Knee Therapy, Pulse 2-150HzPhoto 2 of 24 Modes TENS Unit Muscle Stimulator Machine with 8 Reusable Electrode Pads, 3-in-1 TENS Device with 40 Intensity Levels, 90 Min Timer, Back/Neck/Knee Therapy, Pulse 2-150Hz