The Roscoe TENS 7000 Digital Pain Management Unit is a portable and handheld muscle stimulator designed for pain relief and massage. With 4 massage heads and electrical stimulation, this TENS unit offers vibrating therapy for the legs, back, and arms. It is powered by batteries and is lightweight, making it convenient for use on-the-go. The unit is cordless, rechargeable, and waterproof, providing flexibility and ease of use. Manufactured by Roscoe Medical, this TENS unit is a reliable option for managing pain and muscle tension.