The NEW MARK 7 MegaBodyLight™ offers all the features of the earlier models except there are now significant improvements that make this unit highly effective.  The LED Powerheads are five times brighter and the lamps now last 4 times longer.  What this means to you is a LIFETIME WARRANTY.  If at anytime your MegaBodyLight does not perform as promised, just contact us and we'll take care of it.