The fish tank mini heater is made of carbon fiber. It is small and will not occupy much space. The mini heater is used to heat the fish tank water and even turtle tank water, and it can not hurt the small animal. Features: Small size: the heater is small, easy to use and it will not occupy much space. The mini heater is used to heat the fish tank water and even the turtle tank water; not hurt the small animal. Anti-dry safety protection: designed with the anti-dry technology, convenient to use. Constant temperature: designed with the 25, you can not adjust the temperature. Suction cup design: designed with the suction cup, easy to fix the fish tank heater. Specifications: Condition: 100% Brand New Material: Carbon Fiber Power: 8W, 16W, 32W, 50W(Optional) Cable Length: approx. 131cm/ 51.57in Size: approx. 17*3*2cm/ 6.69* 1.18* 0.78in Voltage: 220V Plug Type: EU Plug(Please kindly make a note if you need any adaptor ) Package List: 1* Heater Notes: 1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. .