Feature: 1. Variable Frequency: PID temperature control algorithm, realizing high heat and low power consumption, using intelligent frequency conversion technology, the power size is freely adjusted by the chip, soft temperature control. 2. Fast Heating: Selected silicon carbide sand filling, safe and stable, fast heat conduction, energy saving and power saving, high purity nitinol wire, thickened heat transfer, faster heating and more power saving. 3. IPX6 Waterproof: IPX6 waterproof grade, high safety performance, built in accurate dual temperature sensing probe, always monitor the fish tank, safety is guaranteed. 4. Easy to Use: External temperature adjustment, one key cycle, safe and convenient, temperature display ℃ and ℉can be switched, you can long press the temperature adjustment key for 5 seconds to switch. 5. Digital Display: High definition LED display, accurately monitor the temperature day and night, real time easy to grasp the current fish tank temperature. 6. Use Note: The heating speed is fast, try to place in the position of rapid water flow, so that the fish tank is evenly heated. Completely submerged underwater when in use, to prevent burning the rod body, burning melting the protective shell and so on. Specification: Item Type: Automatic Aquarium Heater Material: ABS Use: Fish Tank Automatic Thermostat Suitable for Water Volume: Below 300L Suitable for Fish Tank: 80‑100CM/2.6-3.3ft. Package List: 1 x Heater2 x Suction Cups