Specifications:Adjustable temperature range is 20 degree to 34 degree.Easy to install, simple operation, high temperature resistance, explosion-proof quartz glass tube, high security.The sensitive temperature regulator and over-temperature protection device are set inside the rod, and the high-resistance heating wire is adopted, the heating is uniform and stable, and the service life is long.Good heat resistance, good insulation, high heat transfer efficiency, with a strong support hook and mooring suction cup, making its work more stable and reliable.Double-layer waterproof protection, full submersible design, can accurately maintain the set temperature.Can work in water up to 120cm deep, this product is only suitable for use in fresh water, sea water.Type: Water Heater RodTemperature Control Range: 20&x2103; to 34&x2103;Frequency: 50Hz - 60HzFeatures: Easy to Use, Temperature Adjustment, Pet Supplies25W/50W Rod Length: 20.5cm/8.07" (Approx.)100W Rod Length: 26.5cm/10.44" (Approx.)200W/300W Rod Length: 30.5cm/12" (Approx.)Cable: 80cm/31.5" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Water Heater Rod2 x Fastener