Men's Slendertone System + 2011 The Newest Slendertone Abs Belt On The Market !! 10 workout programs,including sports pro crunch and endurance trainer programs.Older units only have 7 0-150 intensity levels for maximum power !! Older units only go up to 99 Built-in warm up and cool down phases to ensure correct muscle usage Intelligent training system to auto-progress through the programs Rechargeable & interchangeable controller(recharger included)-suitable with all System garments