The operate panel of the water pumps is simple and easy to understand, with flexible and changeable operate methods, the amount of water can be quantitatively selected, and the water can be taken and paused at any time Make of, Silicone and Stainless Steel, with high compatibility and strong endurances ability, drinking water, water comes out with a light touches The electric water pumps has three levels of water volumes, which is suitable for cups of various capacities You can choose the appropriate gear according to the volumes of the container Bucket & Desktop Double use: The electronic water pumps can fit a variety of buckets There are two ways to use it, making your water intakes more flexible USB interfaces charging, charging and using at any time, more to carry, can be connecting to an adapter, portable power, computer and other USB interfaces charging