Features:1. High-quality filament, high efficiency and energy saving.2. Explosion-proof quartz glass tube is used, with high ultraviolet transmittance.3. The powerful suction cup can adjust the position freely.4. Safe waterproof design, can be used completely diving.5. The independent power switch is very suitable for safe use.6. Suitable for controlling malignant bacteria in aquariums and fish tanks. Specification:Wattage: 5WVoltage: AC220-240VBody material: Quartz GlassCable length: About 143cm Size:5W: 19mm x 180mm (0.74 inch x 7.25 inch) (suitable for fish tanks within 60cm) Package Included:1 x Aquarium UV germicidal lamp2 x Suction cup1 xUKAdapter Note:1. The sterilizer should be placed in the filter tank, not directly in the fish tank.2. The product can be used in diving.3. During use, please turn off the power, if the bulb gets water, please stop using it immediately.4. Ultraviolet rays will directly harm human skin and eyes, please do not expose it. Recommendations:1. Please choose the right lamp according to the size of your fish tank and filter tank.2. 3-4 times a week, no more than 2 hours a day; please according to the actual situation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.