Feature: 1. [Intelligent] Aquarium heater using intelligent frequency conversion technology, the power size is freely adjustable by the chip, soft temperature control, always maintain the most appropriate power constant temperature. 2. [Energy Saving] Aquarium intelligent heater, quartz explosion proof tube, ultra short rod body, PID temperature control algorithm, nitinol wire heating, to achieve high thermal energy, low power consumption. 3. [Fast Heating] This fish tank heater selected silicon carbide sand filling, safe and stable, fast heat conduction, high purity nitinol wire, thickened heating, heating faster and more energy efficient. 4. [LED Display] The fish tank heating rod has a high definition LED display, day and night to accurately monitor the temperature, so you can easily grasp the current fish tank temperature in real time. 5. [Convenient Design] Aquarium heating rod with external temperature regulation, one key cycle, safe and convenient. Built in accurate dual sensing temperature probe, always monitor the fish tank. 6. [IPX6 Waterproof] Submersible fish tank heater with IPX6 waterproof rating, high safety performance, prevent fish and users from electric shock, create a safe underwater environment for your fish. Specification: Item Type: Aquarium Heater Material: ABS, Quartz Tube Use: Fish Tank Automatic Constant Temperature Heater Plug Specifications, Voltage: EU Plug, 220V Temperature Control Range: 15-34℃. Package List: 1 x Aquarium Heater2 x Suction Cup1 x Instruction Manual