1. Save electricity consumption2. Small size and easy to operate3. The battery can be charged using a USB4 cable. Only one tap to pump water5. Can be used for 1.5L, 5.7L, 10L, 11.3L, 15L, 18.9L gallon sizes SpecificationPower: 4 WattVoltage: DC-5VpeBattery capacity: 800mAhFAQ, when can you get the offers?1. Are there any conditions for initial use? For first use, please charge the battery for 3-5 hours with the charger using the provided USB cable. The indicator light will remain on while charging and will turn off automatically when fully charged.2. How to properly install a gallon pump? After the battery is fully charged, attach the silicone hose. But before installation, please clean the top of the pump first. Then make a hole in the lid of the gallon tank so that the pump will be installed properly. Then insert the gallon water pump that was attached to the hose into the gallon of drinking water. Check and press the on/off button whether it works properly. Size: 11 x 5.6cm Material: Plastic Color: White + Black Package Contents: 1 x Water Pump 1 x USB Cable 1 x Water Pipe Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.