Non-contact / automatic pp antiseptic bottle is more hygienic, no need to contact the soap dispenser. Hand movement can be recognized and the gel is received in 0.25 seconds. The vial is made of corrosion resistant PP (polypropylene) material, which can resist corrosion and sterilization of organic solvents (such as alcohol and oxidizing substances), weak acids and weak bases, and is not easily damaged. 450ml super large capacity / IPX7 waterproof The main body is made of hardened and corrosion resistant nylon, which is strong and not easy to age. The fuselage is connected by ultrasound, and the airtightness reaches the waterproof level of IPX7. Prevent water and soap from entering corroded circuit boards. (You can use gel-type hand sanitizer and sanitizing alcohol directly.) Three-level liquid volume adjustment USB charging mode Three liquid discharge methods: The glue volume can be adjusted as needed. Built-in 1000mAh battery, without complicated wiring. If it takes 3 hours to fully charge, it can be used for about 90 days. Since no external battery is required, charging via USB is very economical. Please Note: Get the product and charge it for 3 hours before use. Seven color lamp / anti-clog design Seven color adjustment. During use, the indicator light comes on. It can stimulate children's desire to wash their hands and improve hand washing habits. Note: this feature can be disabled. Please refer to the manual. This product has an anti-clogging function. 1. Add a filter to the end of the pipette. 2. Add a filter to the air inlet. This effectively extends the life of the product.