1. The data comes from the technical testing center of Guangzhou Stars Pulse Co., Ltd. Compared with manual toothbrushes, testers used usmile Y1 series electric toothbrush, 2. and the efficiency of dental plaque removal increased by 98.18%. 3. Y1S has a power increase of 30.11% over the last version. 4. Data comes from usmile laboratory and the report is based on an analysis of use in testing with 31 testers. 5. Data comes from the usmile technical testing center, using clean mode 2 times a day for approximately 2 minutes each time. Durations may differ slightly due to personal usage. Data is for reference only. 6. Data comes from a third-party testing agency. 7. IPX7 waterproof rating does not apply to hot water or steam.* usmile Sonic Electric Toothbrush Y1S is certified by the American Dental Association (ADA).** Refers to the total number of all usmile products-related awards.*** Refers to the total number of authorized patents from the usmile brand company - Guangzhou Stars Pulse Co.,Ltd. Statistics as of March 14, 2023. The above 450 + patents have obtained patent certificates, including but not limited to: Electric Toothbrush: Chinese Invention Patent, Patent No. ZL202010625423.8; Chinese Utility Model Patent No. ZL202022578328.5: Chinese Utility Model Patent No. ZL201920492944.3: Chinese Utility Model Patent No. ZL2019203777706: Chinese Utility Model Patent, Patent No. ZL202020693145.5376 Dental Flosser: Chinese Utility Model Patent, Patent No. ZL202122406730.X; Chinese Utility Model Patent No. ZL202121910195.5: Chinese Utility Model Patent, Patent No. ZL202121909816.8; Chinese Utility Model Patent, Patent No. ZL202121909754.0; Chinese Utility Model Patent......China usmile Utility Model Patent, Patent Number: ZL202123203607.4; Patent Number: ZL 2021 2 3195656.8