The PlayMakar(R) Sport Muscle Stimulator is a versatile TENS and EMS unit. Take this portable unit from the gym to the office to reap the benefits without sacrificing power. Two independent channels and 10 preset programs offer everything from muscle warm-up, strength, recovery, endurance, and pain management. Gain the competitive advantage and up your recovery game. Features 4 TENS mode for pain relief and arthritis 6 EMS modes for muscle conditioning, strength, endurance, warm-up, and recovery Compact enough to carry in pocket or on hip Back lit display is easy to read FDA cleared Kit Includes Sport muscle stimulator unit Lead wires 4 2"x2" self-adhesive reusable electrodes 2 2"x4" self-adhesive reusable electrodes Rechargeable lithium ion battery USB/AC adapter Clear belt clip holder Tote bag Quick start guide and instruction manual