Features: Ensure a stable and comfortable environment for your fish with the fish tanks mini heating rod. This compact usb powered heating rod quickly heats up small aquariums, providing a temperature increase of 5-12 degrees. Designed for fish enthusiasts, this mini heating rod is perfect for maintaining the temperature in freshwater aquariums. Whether it is a small fish tank or a mini aquarium, this heating rod is suitable for various indoor settings. Experience worry freely heating with the explosions proof glass constructions and double layer sealed protective cover of this water heater. Specifications: Material: Aluminium Alloy Size: Approx. 1.5x7.6cm/ 0.59x2.99in Type: 5W, 10W Package Includes: 1pc Mini Aquarium Heating Rod note: 1: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2: Due to the difference between different monitors, the picture may not reflect the actual color of the item.