Small Miniature Aquarium Fish Tank Box 5V USB Electric Heater Constant Temperature

General description Compact and comfortable, the Small Miniature Aquarium Fish Tank Box 5V USB Electric Heater is easy to use, space-saving, and portable. It is designed for low water level environments, making it ideal for heating small aquariums, turtle tanks, and other small tanks. Please select a product that matches your water volume. Technical specifications Power supply: 5V USB low-voltage Power cable length: 2 m Temperature increase: 1-4 °C per hour, depending on water volume and ambient temperature Working indicator: Light turns on below 25 °C and turns off above 25 °C Other information Built-in automatic protection chip for constant temperature: Power protection automatically turns off when temperature exceeds 25 °C