Specification: Material: Stainless steel 304 Operating voltage: DC 5V Rated power: 24 W Charging: USB charging cable Size: 14 x 8 cm Package included: 1 x water pump 1 x hose 1 x stainless steel tube 1 x USB charging cable HIGH QUALITY MATERIAL Our water bottle pump is made of food grade silicone and ABS, while the spout tube is 304 stainless steel, in accordance with food grade material standards, BPA free, nontoxic and odorless. Healthier drinking automatic water dispenser with one button, solves health problems such as repeated boiling and cooling of bacteria in the water dispenser. Perfect for the office, home, kitchen, school and camping, etc. USB Charging Large capacity, high capacity lithium battery, fully charged once. USB powered, charging via USB port such as power bank, USB cable. Security system This water pump can be used while charging, with explosionproof, overcharge and overdischarge protection. Completely silent operation, low noise, easy to use.