Hi Chris, These kind of things? http://www.a1exercise.co.uk/start.htm (Graphics #1 and #3, (numbering LTR), just above the shopping basket link) This other site seems to think they are called EMS (Electric Muscle Stimulators): http://www.electronicmusclestimulation.co.uk/start.htm ... and offers about 7 different ones for sale. However, 'Go Ask Alice', doesn't much care for these buggers: http://www.goaskalice.columbia.edu/2174.html These folks don't think much about them either: http://www.niaonline.com/NiaLD/NewDesign/homepage_channel/homepage_article/1,2011,2166,00.html Sorry Chris, thinking seems to be that these are good devices for physical therapy or in recovering from certain kinds of injury --- as opposed to a effective way to lose weight or build muscle mass. HTH, RonL. (I'm VERY glad my chiro has heavy duty electro-stim muscle devices ... they have helped me considerably in reducing back pain from injuries. However, I'm gonna keep working out ... I think that's a better path to losing weight and increasing "tone".) -----Original Message----- From: Chris Marsh [mailto:chris at webbtech.co.uk] I have a somewhat bizarre request for information. I am aware of a product called "Slendertone" that claims to tone muscle or reduce fat (or whatever) through electrical impulses (or something). This is not a great source of interest to me; being about as lean as they come; but I need to find some objective information regarding the best of this type of product on the market.