Feature: 1. The package contains two suction cups with strong suction, making it easy to move and adjust the position freely. 2. Explosion‑proof glass tube is used, which is not easy to be damaged and has high ultraviolet transmittance. 3. Powerful, with ultraviolet cleaning function, cleaning lamps, efficient algae removal, can effectively keep the fish tank clean and bright. 4. Using high‑performance energy‑saving high‑quality filaments, green and environmentally friendly, does not waste excess electrical energy. 5. It has timer function, supports regular cleaning, which makes it more practical. Specification: Item Type: Aquarium UV Clean Light Material: GlassLamp Length: Approx. 175mm/6.9inPower: 5WApplicable Fish Tank Size: Within 50cm/19.7in. Package List: 1 x Aquarium UV Clean Light2 x Suction Cup Note: This product cleans and removes algae by emitting ultraviolet rays. Please do not observe it directly by naked eyes. Direct exposure will damage the eyes and skin of people. Please pay attention to protection. The ultraviolet lamp can only be used in the filter tank, and it is prohibited to directly irradiate organisms.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.