Package Included:1x Aquarium Heater(This product is only suitable for fresh water)Aquarium Heater-Easy to use, Safe, Precise.-Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature.-Sensitive and reliable thermostat maintains uniform temperatureSpecification:Voltage220VPower:50W/100W/200W/300W/500WLength:19cm/23cm/28cm/32cm/37cm (7.48inch/9.05inch/11.02inch/12.59inch/14.56inch)longTemperature range:18C~34Plug specifications: EUTube wall thickness: 0.5mm When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it