The Litening Handpiece is designed with a high-tech sealed ball-bearing motor that runs cool and quiet from 4500-10000s/m or 2000-5000rpm. (Dependent on power source connected.) The easy-grip, light-weight 9 oz., handpiece is impact-resistant and sealed to prevent hair and debris from circulating into the clipper motor. Fits all snap-on style blades and snap-on combs/guards. Litening handpiece is made in the USA. Patented and patents pending. All 721, 821, and 804 battery packs fit the Litening handpiece. All 721 and 821 kit cordpacks will fit this handpiece.