?Customer Service?100% 90 days money-back guarantee. Feel free to contact us while missing accessores, other issues or requirement. ?Easy Clean & Waterproof?The nasal mucus reservoir is separated from the air inlet of the machine to prevent backflow. Simply disassemble the mucus collection cup and silicone tips, rinse it with hot soapy water. ?USB Rechargeable?400mAh large capacity battery, which can be charged via USB cable. Note: Please ONLY use 5V adapter and it will not work while charging. ?Soothing Music?Electric baby nose cleaner with cheerful children's music,can soothe babies who are anxious about electric objects. High-quality motors ensure low noise, allowing your baby to enjoy a clean nasal experience in a quiet environment, helping babies breathe better and sleep well. ?Medical-Grade Material?Baby nose sucker kit includes 4 detachable medical-grade silicone tips (excluding BPA and latex). The high-grade material is soft and healthy, which can avoid damaging the baby’s delicate nasal mucosa, oral contact and cross-infection. It is suitable for kids and toddlers. ?Powerful Suction?The Holnkme baby nasal aspirator has 3 modes of suction power,the maximum suction is up to 63Kpa,which can solve almost all types of nasal mucus. (For stubborn nose and mucus,please soften it with saline snot spray first,wait for 30 seconds to one minute,then easily suck away with our electric baby nose sucker).