The Lithium-Ion™ Vacuum Trimmer is the most powerful vacuum trimmer by Wahl®. The powerful vacuum suction captures hair in a built-in chamber for a no mess, easy clean-up. The intake chamber is also adjustable so you control the opening of the vacuum area. With Lithium-Ion™ power the trimmer runs up to 90 minutes on a single charge and has a smart LED charge indicator that shows you the status of the charge. The trimmer also comes with 2 interchangeable heads: precision trimmer and nose trimmer, so you never miss a hair. The kit includes 8 individual guide combs and a 6-position adjustable guide comb that allows you to achieve a variety of beard lengths and get the look that you want.