General description The Mini USB Plug Aquarium Heater is a compact and practical solution for heating small aquariums, turtle shells, and small tanks. With its simple appearance and space-saving design, it is easy to carry and suitable for low water level environments. This heater features a USB port and a built-in thermostat that automatically regulates the temperature, ensuring a comfortable environment for your aquatic life. Technical specifications Power: 10W Voltage: 5V Heating capacity: 1-2 liters Usage The heater operates by simply plugging it in. It raises the water temperature at a rate of 1-4 degrees per hour, depending on the water volume and ambient temperature. The thermostat sends signals to the heater based on the aquarium's temperature, maintaining the desired water temperature for your fish.