Model #: BTF3. BEST FOR: Shaping&trimming necklines, beards,&moustaches. Lithium ion power for up to 2 hours of non-stop trimming; Recharges to full power in 2 hours. Perfect for trimming beards, moustaches, necklines, outlining&edging around ears. Fine cutting teeth for extremely close trimming. Sleek, ergonomic design contoured to fit your hand. Multi-voltage charger. Rotary Motor: MAX 6000SPM.