Philips HX9911/95, Adult, Sonic toothbrush, Daily care, Deep clean, Gum care, Whitening, Violet, Battery, Built-in battery Philips HX9911/95. Purpose: Adult, Toothbrush type: Sonic toothbrush, Teeth brushing modes: Daily care, Deep clean, Gum care, Whitening. Power source: Battery, Battery type: Built-in battery, Battery life (max): 336 h. Number of handles included: 1 pc(s), Number of brush heads included: 1 pc(s). Battery technology: Lithium-Ion (Li-Ion)