Made of high quality material, the soap dispenser is more durable and sturdy. Contactless and easy to set up. Put your hand under the sensor to let the dispenser start working. No drips or tails, no wasted soap. Our smart infrared sensor technology provides a sanitary, touchless, easy-to-use operation that will only activate when needed. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement and measurement, there could be some slight differences in the color and size between the photo and the actual item.Sincerely hopethat you can understand!Thanks! The waterproof base helps prevent the battery compartment from being soaked with water which causes corrosion and equipment failure.