Philips 4500 series HX6823/16, Adult, Sonic toothbrush, Daily care, Gum care, 62000 movements per minute, Blue, 2 min Philips 4500 series HX6823/16. Purpose: Adult, Toothbrush type: Sonic toothbrush, Teeth brushing modes: Daily care, Gum care. Power source: Battery, Battery type: Built-in battery, Battery technology: Lithium-Ion (Li-Ion). Number of handles included: 1 pc(s), Number of brush heads included: 1 pc(s)