Philips SkinProtect Blades Wet and dry electric shaver, Rotation shaver, Black, SkinProtect Blade System, Buttons, AC/Battery, Lithium-Ion (Li-Ion) Philips SkinProtect Blades Wet and dry electric shaver. Shaver system: Rotation shaver, Product color: Black, Shaving system technologies: SkinProtect Blade System. Power source: AC/Battery, Battery technology: Lithium-Ion (Li-Ion), Battery type: Built-in battery. Runtime: 50 min