Product Details Five gears can be adjusted and selected by one key control Easy and convenient for meeting different needs Food grade silicone suction head and nozzle, soft and skin-friendly. Detachable design for cleaning conveniently Ergonomic design with humanized radian. Comfortable to hold Rechargeable design with USB cable. Easy to charge and durable to use Anti-reflux design, can prevent the snot from flowing back into the nose 【Use Instructions】. Before use, soak the suction nozzle in warm salt water for 10 minutes to disinfect. Install the nasal aspirator and open the switch to start. If the nasal excrement is dry nasal excrement, can use saline or nasal spray to spray into the nostril first, the nasal spray should be exposed to the nasal cavity for four to five minutes. 【Specification】 Material: Silicone Suitable Age: 0 – 6 years old.