10 W USB Aquarium Heater with Robust Safety Design, 15-34 C, Automatic Temperature Control, Heater, Designed for Small Aquariums Saltwater and Freshwater

Intelligent Shut-Off The temperature setting range is 17°C to 34°C (62°F to 93°F), and the heating cycle is gradual. After reaching the set temperature, the heating automatically stops and the temperature remains constant. Accurate temperature control: the intelligent external temperature controller with electronic digital display regulates the temperature precisely to about 0.5 °C. External temperature control, never wet your hands: use an external controller to adjust the temperature instead of immersing your hands in water to turn the controller. Compact Size With a length of only 90mm, this USB aquarium heater is suitable for tanks with a capacity of approx. 5L or less cut to size, perfect for small fish. Fast heating capability: quickly heats the water to the desired temperature within an hour, so that your pets can quickly enjoy comfortable living conditions.