Philips OneBlade Hybrid Electric Trimmer and Shaver, QP2520/21Rechargeable OneBlade can trim, edge, and shave any length of hair. Trim it down click on combs for a fast and even trim in all the right places. Edge it up dual sided blade for precise edging to line up your style easier than ever before. Shave it off fast moving cutter to shave long hair, but not too close so your skin stays comfortable. Replaceable OneBlade lasts up to 4 months*. (*For best shaving experience. Based on 2 full shaves per week.