Features: This adjustable aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish for ponds are kept. With its digital screen simultaneously displays the set temperature and the current aquarium temperature. You can set temperature up in a healthy range of 20-34 with button and monitor how well the heater is doing its job in real-time. You can choose the following power according to the size of your tank:300W, 500W, 800W, 1000W, 1200W. 1.Power:300WProduct size:295.54cmLine length:190cmvoltage:220-240V 50/60HzThe amount of water: