[11/28/2025] Philips Sonicare 4100 系列電動牙刷 (HX3681/24)，Philips Sonicare 4100 Rechargeable Electric Toothbrush, with Pressure Sensor, 2 Intensity Settings, SmarTimer and QuadPacer, 14-Day Battery Life, Black, Model HX3681/24，目前特價$39.99，使用$10 off coupon之後，等於只要$29.99 USD。境內免運費。哪裡買: amazon。