1、Strong suction cup can fix the heater firmly on the tank. 2、Double-layer waterproof protection, full submersible design, can accurately maintain the set temperature. 3、Temperature can be adjusted from 18 to 34 degrees. 4、Low electricity consumption: Heating 5 to 10 minutes, pausing 2 minutes until it reaches your set temperature, ensure that the heating rod does not overwork, improve lifespan. 5、Thermostatic design: Double-metal silver-plated contact temperature control, internal fixed temperature setting process, strong temperature sensitivity, small temperature error. This is a fish tank heating bar. Made of high quality stainless steel material, sturdy, rustproof and corrosion resistance. Double-metal silver-plated contact temperature control, internal fixed temperature setting process, strong temperature sensitivity, small temperature error. Double-layer waterproof protection, full submersible design, can accurately maintain the set temperature. The maximum immersible depth IS 120cm, suitable for fresh water use. Features: Made of high quality stainless steel material, sturdy, rustproof and corrosion resistance. Temperature can be adjusted from 18 to 34 degrees. Strong suction cup can fix the heater firmly on the tank. The maximum immersible depth is 120cm, suitable for fresh water use. Double-layer waterproof protection, full submersible design, can accurately maintain the set temperature. Low electricity consumption: Heating 5 to 10 minutes, pausing 2 minutes until it reaches your set temperature, ensure that the heating rod does not overwork, improve lifespan. Thermostatic design: Double-metal silver-plated contact temperature control, internal fixed temperature setting process, strong temperature sensitivity, small temperature error. Specification: Condition: Brand new Material: Stainless steel Color: As picture shows Temperature range: 18-34 degrees Size: Approx. TypeBar length(cm/in) Wire length(cm/in)  Capacity(L) 50W 20.5/8.1 113/44.5 50-100 100W 23.3/9.2 113/44.5 75-150 200W 28.2/11.1 113/44.5 100-200 300W 32.5/12.8 113/44.5 200-300 500W 37.2/14.6 113/44.5 300-400 Package list:1 * Heating Bar Note: When cleaning the heating rod, please turn off the power 15-20 minutes in advance to avoid burns. Do not use detergent, solvent, acidic liquid cleaning. Do not let children touch and play. This stainless steel heating rod is only suitable for fresh water. the heating rod must be completely submerged into the water Please allow 1-5cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.