Quality assurance:If there is any problem with the product received, we will give you a 30-day unconditional return refund,Provide one-year warranty service from the date of purchase. Compatibility:Fits most Philips Sonicare electric toothbrush. philips Sonicare HX3000 Serie, HX6000 Serie, HX8000 Serie, airfloss series, essenceplus dailyclean series, flexcare series, flexcareplus series, flexcare platinum series, expertclean expertresults series, Sonicare ProtectiveClean,3 Series Gum Health, 2 Series Plaque Control, ProResults, EasyClean, HealthyWhite, CleanCare+, PowerUp,FlexCare. WATERPROOF DESIGN: Waterproof protection with IP67 grade and dust-proof, made of insulated ABS material. Inductive charging, no metal leakage, safe and more secure, pick up and use.put down and charge. .Product Parameters: Input: 110V to 240V, 50-60Hz. Output: 1.4W. Line length:1.2M.