AB Gymnic Electronic Muscle Arm leg Waist Massage Belt How does it work? Body building belt replaces monotonous sit ups and exercise. Only 10 miniutes you can exercise your abdominal muscles approximately 600 times Can you image how many sits up you would have to do to achieve the same results? Introductions: Brand new ABGymnic muscle toning belt! Electric current pulse controlled by microcomputer 6 preprogrammed exercise routines for a complete and personalized workout No wire， wear and workout anytime， anywhere Tones and firms the muscles of abdomen， thigh， arm， etc. Adjustable long and short belts for toning different parts of the body Suitable for both men and women Note: This product use electric current to stimulate acupuncture points， muscles， and nerves. It's normal when you get pricking. You can adjust intensity or change mode when pricking feel is too strong. AB Gymnic Unit Neoprene Center Piece Long belt Short arms & leg belt User instruction Package including: No gel and battery. For aviation security reasons， this product delivery without battery ，gel