Specifications: - Voltage:220~240v - Frequency:50HZ - Model length: - UV-H18W : 290mm - UV-H36W : 440mm Power: - 18W(90~220Gallon) - 36W(150~350Gallon) - Work hour per day: 6 hours - Plug Type: CN Plug+ UK Adapter Converter Package Included: 1 x UV Sterilizer (UK Adapter Converter) Notes: 1. UV-ray is harm to human pet plant,please do not irradiate deirectly. 2. There may be 1-3mm of size deviation due to manual measurement. 3. There may be a little color difference due to display pixel and light. 4. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 5. Please allow 1-2cm measuring deviation due to manual measurement.