The Andis ProFoil Lithium Titanium Foil Shaver has staggered head shaver blades for a closer shave, and has up to 80 minutes of runtime on a single charge! The lithium-ion battery provides maximum power and delivers over 1 hour of runtime on a single charge; thats 2x longer than other shavers! It is lightweight and weighs less than 5 oz. It has a powerful and quiet rotary motor. The gold titanium foil is hypoallergenic for irritaion-free shaving.