Description: It can ensure the output of heat and keep the water temperature inside the tank steady. Temperature indicating scale can be adjusted between 16~32. Totally submersible, waterproof double insulation, durable and safe design. Power indicator, ensures safe operation. Can automatically adjust the temperature, good for fish in the aquarium. Specification: Material: Glass Color: Black Plug: EU Plug Wattage: 100W / 200W (Optional) Adjustable Temperature Range: 16~32 Size: 100W(LxD): 24.5x2.5cm / 9.65x0.98inch 200W(LxD): 33x2.5cm / 12.99x0.98inch Cable Length: Approx. 85cm / 33.46inch Package Includes: 1 Piece Heating Rod Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item.