Philips X5101/15, Rotation shaver, Black, Blue, Battery, Lithium-Ion (Li-Ion), Built-in battery, 50 min Philips X5101/15. Shaver system: Rotation shaver, Product color: Black, Blue. Power source: Battery, Battery technology: Lithium-Ion (Li-Ion), Battery type: Built-in battery. Handle(s) features: Non-slip grip