Features: Made of high-quality carbon fiber, it is environmental-friendly，highly efficient and safe to use. It can ensure the output of heat and keep the water temperature( 25°C)inside the tanks(Maximum 5L water capacity tanks) steady. The heating element is highly efficient and compact, completely safe for use. It is power saving and will not scald your fish and for turtle etc. Have two suckers at the button, so you can hang it in the for tank. Besides, you can also put it in the water, since it is submersible. Specifications: Material: Carbon Fiber Voltage: 220-240V Plug: EU Plug Wattage: 8W(Optional) Temperature：Steady 25°C(77°F) for Maximum 5L water capacity tanks Heating Rod Size: 13.7x2.3cm / 5.39x0.91in Color: Black Package Includes: 1 x Mini Aquarium Heater note: 1.Transition: 1cm=10mm=0.39inch         2.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.         3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!