1、[Suitable For Shallow Water Level] This heating rod is suitable for water level as low as 3cm/2in, which is very suitable for turtle tanks with shallow water level. 2、[Over Temperature Protection] When the water temperature of the fish tank exceeds 34°C, it will automatically stop heating to prevent fish from cooking. 3、[Safety Design] Thickened quartz and explosion proof glass, high temperature resistance, corrosion resistance, available in both freshwater and seawater. 4、[Fast Heat Conduction] The heater has built in high quality electric heating wire, which can quickly gather heat, with better thermal conductivity and faster heating speed. 5、[Anti Leakage] This aquarium heater is well sealed, insulated, prevent electricity leakage, safe and reliable, creating a high quality living environment for your fish. 1 x Aquarium Heater Item Type: Aquarium HeaterMaterial: QuartzSize: Approx. 12 x 2.8 x 2.2cm / 4.7 x 1.1 x 0.9inLine Length: Approx. 1.2m/ 3.9ftTemperature Control Range: 22-34℃