For Philip Sonic care FlexCare Toothbrush HX9120 Bluetooth HX9120/9140/HX9160
1 Pcs HX9120 Brush Handle. Smartt brushing, superior results: 10x more plaque removal and healthier gums in 2 weeks vs. a manual toothbrush. Their website also demonstrates a step-by-step process for the Sonic care APP operation.