Description: Sensitive temperature regulator and over-temperature protection device are installed in the rod. The high-resistance heating wire is used to produce even and stable heating and long service life. Good resistance, good insulation, high conduction efficiency, equipped with strong support hooks and parking suction cups, making its work more stable and reliable. The temperature can be adjusted from 20 degrees to 34 degrees. Double-layer waterproof protection, full submersible design, can accurately maintain the set temperature. Convenient installation, simple operation, high temperature resistance, explosion-proof quartz glass tube, high safety! Specification: Voltage: 220-240V Frequency: 50HZ-60HZ Plug: EU Plug Power: 25W/50W(Optional) Length: Approx.12cm/4.72inch Package Includes: 1 Set Aquarium Heater Note:Customer satisfaction is our primary concern. If the product is somehow cracked or broken during shipping, please feel free to contact us. We will try our best to give you a satisfactory solution.