Amazon has this Dual Channel TENS Unit priced at $35.99. But, you can clip a 20% off coupon and pay only $28.79! This multi-functional TENS unit has 24 preprogrammed massage modes for pain and muscle relief. My son took quite a hit last year during a football game, and it still acts up from time to time. His physical therapist recommended a device like this, so hopefully he can get some relief!
