✓? GOOD QUALITY SERVICE - If you have any questions about our products, please contact us, we are happy to solve it for you in 24 hours. ✓? TRAVEL ESSENTIALS - The toothbrush wireless charger is light wight with long cable. Because small size of the socket base, it is portable for travel. ✓? HIGH EFFICIENCY TRANSMISSION - The same to original Braun Orab B charger, input voltage suitable for most area (110-220V), and powered by 0.9W. It will work well with your Oral-B electric toothbrush. ✓? SAFETY WATERPROOF - CHOKMAX oral b toothbrush charger is designed for America standard, made of insulated ABS material. You can just use it in bathroom or kitchen. Waterproof features are safe for you and your family in daily use. ✓? FULLY COMPATIBLE - Compatible with D12 S12 S18 D17 D18 D19 D20 D29 D34 OC18 OC20 professional 650 700 1000 2000 2500 3000 4000 5000 D12013 D12013w D12523 3709 3728 3737 4736 4717 4729 8850.