Slendertone Flex Max Unisex is a clinically proven, easy to use, battery powered abdominal toner that delivers strong and toned abs. Use 5 times a week for guaranteed results in just 6 weeks. Battery powered (3xAAA not Included) for convenience, Slendertone Flex Max Unisex ab belt can help you achieve firmer, flatter abdominal muscles, so you can look great all year round. Slendertone's exclusive, patented Electronic Muscle Stimulation technology ensures all abdominal muscles contract deep into the core - not only those under pads. This gives firmer, flatter, more toned abs. Unlike many other products on the market, Slendertone works not just the Rectus Abdominus and Oblique muscles but the difficult to activate Transversus Abdominus that is most effective in flattening your stomach. During abdominal exercise your muscles naturally respond to the signals your brain sends, which over time and repeated effort create toned abs. Slendertone technology works in the same way, reaching all of your muscles, including the core in one short session, whilst you carry on with your daily routine. Using Slendertone for 20 minutes a day can be like doing 120 sit ups.