Philips Norelco OneBlade QP2513, Washable, Battery, Charcoal, Lime Philips Norelco OneBlade QP2513. Minimum hair length: 0.0394" (1 mm), Maximum hair length: 0.197" (5 mm), Control type: Buttons. Product color: Charcoal, Lime, Housing material: Rubber. Power source: Battery, Operating time: 30 min, Battery type: Built-in battery