Mini aquarium heater, 8.5 cm, 26°C, automatic constant temperature, USB powered, 10W, for small aquariums

Compact Design: At only 5 cm long and 18 mm in diameter, this heater is perfect for desktop aquariums, saving space while providing efficient heating. Intelligent Temperature Control: Equipped with a built-in smart chip that maintains a constant temperature of 26°C, ensuring optimal conditions for your aquatic pets without manual adjustments. Automatic Dry Burn Protection: Features a smart thermal sensor that prevents dry burns when the heater is out of the water, ensuring safety and peace of mind. Rapid Heat Conversion: Filled with black and gold sand to enhance heat collection and energy conversion, allowing for rapid heating while saving energy. [USB Powered] Designed with a USB interface, it can be connected to power banks or mobile phone chargers, offering flexibility and safe operation.