KIT INCLUDES 1 FDA cleared Class II OTC HealthmateForever YK15 electroTherapy device (combined TENS unit and Muscle Stimulator), 8 piece self-adhesive conductive reusable gel pads, 4 sets of electrode wires (3.5mm plug), Operating Manual, Acupuncture placement point chart, Lifetime Warranty Card, Powered by 3 AAA batteries. FEATURES - 15 pre-programmed electronic pulse massager massage modes. 9 custom designed modes: Neck, Shoulder, Back, Elbow, Hip, Ankle, Knee, Foot/hand, and Wrist; 6 therapeutic methods: Knead, Acupuncture, Tap, Cupping, Scraping, and Random. Default timer: 80 minutes, adjustable 10-80 minutes. When time is due, it is automatically shut off. 20 levels of intensity and speed in 4 outputs. 4 outputs have the same 100% power, without reducing strength in half. Allows 2- 8 pads to be applied to the targeted areas at the same time; Allows 8 pads to be used at the same time. Powered by 3 AAA batteries. Easy to read animated back-lit LCD Display. Easy to attach belt clip.