TENS sends safe electric impulses to the body. TENS therapy offers electrical impulses for arthritis tendonitis and more. EMS is designed for muscle strengthening. EMS helps with recovery prepping for intense workouts and improves circulation. Soothing heat helps warm up aching muscles. Combine heat with TENS and EMS programs. Dual channels to treat separate areas. 2 Heat settings range 105.8F to 109.4F. Includes: Connection cable w/ 4 PET pads. 4 Adhesive gel pads. Charging cable. Belt clip. Storage bag.