【Specifications】50W aquarium heater, suitable for 15L-55L tank, also suitable for salt water and fresh water. 【Adjustable and Precise】The temperature is adjustable, and the adjustment range is 20℃-34℃ (68℉-93℉). A free thermometer is provided, and the real-time temperature can be measured by sticking it on the fish tank. 【Safety】The aquarium heater is made of 2mm thick quartz glass, 33% thicker than ordinary glass, explosion-proof heating, not easy to crack, which is very safe for people and animals. 【Stable and Practicable】This aquarium heater has a beautiful appearance, shorter length, saving space for your fish. Adopt 8-slot multi-branch heating wire ceramic frame, better heat dissipation, longer service life. Specifications: Power: 50W Temperature range: 20-34°C (68 - 93°F) Voltage: 220V-240V/50Hz Power cord: 0.9 meters Temperature error: +/-2°F Waterproof: IP68 Package includes: 1 x 50W Aquarium Heater 2 x Suction Cups Precautions: The heating part must be fully immersed in water