Feature: 1. This product can be automatically cycled and opened, saving trouble and convenience. 2. Multi-level, high-efficiency clean and amphibious, with high waterproof level. 3. The service life of the cleaning lamp is about 10,000 hours, the wavelength is 254nm, and the working environment temperature is 5-45℃. 4. Strict quality control and quality assurance, high safety factor, can be used with peace of mind. 5. Great workmanship, with small size, easy to carry and store, convenient to use. Specification: Item Type: Underwater UV LampMaterial: Plastic Lamp Instructions: This product is an ultraviolet lamp. In the initial stage of ignition, the arc flickering and unstable phenomenons will occur due to the incomplete evaporation of the liquid in the tube. This is a normal situation, and it will stabilize after a few minutes of ignition. The life of the clean lamp is about 10,000 hours, the wavelength is 254nm, and the working environment temperature is 5-45℃. Timing Duration: 3 hours, 6 hours, 12 hours, 24 hours (constant light). Operating Voltage Frequency: 220V 50HZTotal Length of Power Cord: Approx. 210cm / 82.7in Product Size: Approx. 235 x 45 x 30mm / 9.3 x 1.8 x 1.2in(305-5W,307-7W)Product Size: Approx. 265 x 45 x 30mm / 10.4 x 1.8 x 1.2in(309-9W,311-11W,313-13W). Package List: 1 x Clean Light 2 x Suction Cup1 x User Manual Note: 1. Do not look directly at the eyes or close to the skin, ultraviolet rays are harmful to the human body;2. If the power supply is found to be damaged, please do not use it;3. When cleaning the fish tank or changing the water, the power must be turned off.4.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.