Package Dimensions:32.1 x 14.2 x 6.3 cm; 670 Grams Size:500W Quantity:1 batteries required:No Item Weight:670 g Features:1.Note: Uncontrolled weather may cause the heating tube to fail to heat. Especially in winter, affected by the outdoor environment and temperature, we cannot guarantee that the heating speed of the tank heater is the same as the indoor temperature. if the outdoor temperature changes greatly, the aquarium heater cannot be heated all at once, which may cause your fish to die. not recommend that you use it in an outdoor pond.2.automatic intelligent constant temperature, safety and explosion-proof, convenient control outside the cylinder, nickel-chromium wire heating and fast heat conduction, with protective shell, over-temperature protection, PID control3. Rapid heating mode, high-power heating below 28C, when the heating rod starts to work, the machine instantly heats with high-power until it is close to the set temperature, low-power constant temperature energy saving and power savin4. External digital temperature control display, simple operation, real-time monitoring of the water temperature in the tank can be installed on the outer edge of the fish tank. The temperature adjustment is convenient and safe, no need to take the heater out of the water, and there is no risk of scalding.Specifications Power, voltage, temperature control range, suitable for water volume, suitable for fish tank size, product size, power cord length300W; UK 220V-240V; 50/60Hz; 20C-34C; below 200L; below 80CM ;29x5.5x4CM ;190CM500W; UK 220V-240V; 50/60Hz ;20C-34C ;below 300L;below 100CM;29x5.5x4CM ;190CM800W; UK 220V-240V ;50/60Hz; 20C-34C; below 400L; below 120CM; 29x5.5x4CM; 190CM1200W; UK 220V-240V; 50/60Hz ;20C-34C ;below 700L;below 180CM;29x5.5x4CM ;190CMPackage List:1x Aquarium Heater Thickened Explosion-proof Quartz Tube With An Outer Dia 23mm, Faster Heating Speed, Explosion-proof and Heat-resistant Stability, With ABS Shell For Anti-scalding Protection When Not Use Please Cut Off the Power Supply .Note that the Heating Rod Needs to Be Completely Put Into the Water When Using. When the Water Level Is Lower Than the Heating Rod Sensor Or Leaves the Water, the LED Will Display An Error Code Adopt IH Intelligent Heating Principle, Independent H Algorithm to Control Temperature, Quickly Realize the Conversion of Electric Energy to Heat Energy.High-definition LED Control Display, Real-time Monitoring of Fish Tank Status With Anti-dry Protection and Overheating Protection, Low Temperature Alarm, the Low Temperature Alarm Flashes When the Water Temperature Is Lower Than 20C, When the Water Temperature in the Tank Reaches 34C, the High Temperature Protection Heating Rod Will Stop Working SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. See more product details Thickened Explosion-proof Quartz Tube With An Outer Dia 23mm, Faster Heating Speed, Explosion-proof and Heat-resistant Stability, With ABS Shell For Anti-scalding Protection When Not Use Please Cut Off the Power Supply .Note that the Heating Rod Needs to Be Completely Put Into the Water When Using. When the Water Level Is Lower Than the Heating Rod Sensor Or Leaves the Water, the LED Will Display An Error Code Adopt IH Intelligent Heating Principle, Independent H Algorithm to Control Temperature, Quickly Realize the Conversion of Electric Energy to Heat Energy.High-definition LED Control Display, Real-time Monitoring of Fish Tank Status With Anti-dry Protection and Overheating Protection, Low Temperature Alarm, the Low Temperature Alarm Flashes When the Water Temperature Is Lower Than 20C, When the Water Temperature in the Tank Reaches 34C, the High Temperature Protection Heating Rod Will Stop Working SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.