Philips Sonicare HX2421 Sonic Electric Toothbrush Vibration frequency: 30000 RPMMode: Clean, Sensitive Intelligent timing: 30s quadpacer, 2-minute timing Battery life: 14 days, 2 times a day, 2 minutes each time Waterproof: IPX7 Charger: USB inductive charger Compatible brush head: HX2023 Packing list: Handle*1, Brush head*1, Inductive charger*1
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