Philips Sonicare AirFloss Pro/Ultra - Interdental cleaner, Grey, White, Ergonomic, Built-in, Lithium-Ion (Li-Ion), 24 h Philips Sonicare AirFloss Pro/Ultra - Interdental cleaner. Product colour: Grey, White, Handle(s) features: Ergonomic. Battery type: Built-in, Battery technology: Lithium-Ion (Li-Ion), Charging time: 24 h