Get fighting fit with this Electric Abdominal Muscle Stimulator Opt to buy with the arm simulators Designed to help tone, strengthen and tighten muscles Easy operation with 6 modes Electrical muscle stimulation technology Power: 2 x AAA batteries (not included) Great for working out at home Buying Options:  11.99 pounds instead of 29.99 pounds for the abdominal simulator - save 60%  17.99 pounds instead of 39.99 pounds for the abdominal and arm simulator - save 55%