The Philips Norelco Beard Trimmer 3500 provides you with the perfect beard and stubble with less hassle. The 20 built-in length settings from 1/32 inch (0.5mm) to 13/31 inch (10mm), with an exclusive locking feature, deliver a precise and customizable trimming experience without multiple separate attachments. The self-sharpening titanium blades provide performance and lasting sharpness. The secured length settings ensure an even trim every time. The skin-friendly trimmer with rounded tips and comb prevent skin irritation. The advanced lithium ion battery provides up to 120 minutes of cordless use after a 1 hour charge.