1.Save electricity usage2.Small in size and easy to operate3.The battery can be recharged by USB cable4.Just one tap to pump water5.Can be used for gallons measuring 1.5L, 5.7L, 10L, 11.3L, 15L, 18.9LSpecificationPower : 4 WattVoltage : DC-5VpeBattery Capacity: 800mAhFAQ1.Are there any conditions for initial use?For initial use, charge the battery for 3-5 hours with the charger with the supplied USB cable. The indicator light will stay on while it is being charged and will turn off automatically when it is fully charged.2.How to properly install the pump on the gallon?Once the battery is fully charged, attach the silicone hose. But before installing please clean the top of the pump first. Then make a hole in the gallon cap so that the pump is installed properly. Then insert the gallon water pump that has been attached to the hose into the gallon of drinking water. Check and press the on/off button whether it is working properly.size: 11x5.6cmMaterial:plasticcolour:White + BlackPackage Contents:1 x Water pump1 x USB cable1 x Water pipeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.