Feature: 1. Using a heating wire with better thermal conductivity, the heating speed is faster and more stable. 2. A working indicator light on the top allows you to clearly understand the heating status. 3. The translucent top cover makes the indicator light more conspicuous. 4. The heating rod comes with two strong suction cups, which makes the fixing more stable and convenient. 5. Made of high quality stainless steel, it is corrosion resistant, strong and durable. Specification: Item Type: Fish Tank Heating Rod Product Material: Stainless Steel Product Size: 50w: Length Approx. 19cm / 7.5in 100w: Length Approx. 23cm / 9.1in 200w: Length Approx. 28cm / 11.0in 300w: Length Approx. 32cm / 12.6in Hertz: 50-60Hz Temperature Control Range: 18-34 ° C Accurate Temperature: ±1 °C Instructions for Use: 1. When the light is on, it indicates that it is heating. 2. When the heating rod is working, it is recommended to install a water circulation system to achieve a better balance of the fish tank temperature. 3. Do not use the heating rod in the gravel to avoid affecting the temperature control. . Package List: Fish Tank Heating Rod x 1 Note: 1. When cleaning the heating rod, please turn off the power for 15-20 minutes in advance to avoid burns.2. Do not wash with detergent, solvent or acidic liquid.3. Do not let children touch and play.4. This stainless steel heating rod is only suitable for fresh water.5. The heating rod must be completely submerged in the water.