Philips Sonicare HX8331/30, White, Ergonomic, 1 pc(s), Built-in, Lithium-Ion (Li-Ion), 24 h Philips Sonicare HX8331/30. Product colour: White, Handle(s) features: Ergonomic, Number of tongue cleaners: 1 pc(s). Battery type: Built-in, Battery technology: Lithium-Ion (Li-Ion), Charging time: 24 h. Doesn't contain: Alcohol. Mouth rinse volume: 59 ml