The housing is made of high quality stainless steel, corrosion resistant, not easy to rust, . Infrared induction: more sensitive response, lower power consumption, longer life span, a gentle stretch of the hands to sense the liquid, the red induction light comes on. IPX4 waterproof: thicker base to keep the body away from water, tight structure effectively waterproof, daily splashing water is not afraid, easy to deal with wet environment. Visible-Design: The soaps dispenser has a visible-soaps level, and the water level see-through window can see the remaining soaps level. Long-lasting operation with low power consumption. 4 x AAA batteries (not included) last approximately 180 days. Please note:Slight difference or color difference in kind, does not affect the use, please do not mind, thank you! Discharge method:Infrared sensor discharge Product capacity:280ml Waterproof rating:IPX4 Battery type:4 x AAA batteries (not included) Sensing distance:3-5cm Colour:Silver Material:Stainless