- This Philips shaver's OneBlade technology has a fast-moving cutter so no hairs get missed - Trim your beard just the way you like it with the 5-in-1 adjustable comb - The dual-sided blade lets you shave in precise edges and lines for a sharp look - Each stainless steel blade last up to 4 months - an eject symbol will appear when it needs changing - It's suitable for wet and dry use so you can get your groom on at the sink on in the shower