Fish Tank Heater, Submersible Aquarium Heater with External Temperature Controller 26° Automatic Constant Temperature Small Heater, for Small Desktop Fish Tanks

• [Compact Design]: This fish tank heater measures just 8.5cm in length and 18mm in diameter, making it an choice for small desktop aquariums. Its space-saving design ensures it fits seamlessly into your tank setup without cluttering your view.
• [Intelligent Temperature Control]: Equipped with a built-in intelligent chip, this heater maintains a constant temperature of 26°C automatically, eliminating the need for manual adjustments. The advanced thermal sensor provides automatic for PROTECTION against dry burning when the device is out of water.
• [Efficient Heating]: Made from high-quality quartz glass and filled with black gold sand, this heater ensures heat energy conversion and efficient energy use. This design not only heats up quickly but also conserves power, making it a cost-effective solution for maintaining tropical aquarium environments.
• [USB Power Supply]: Featuring a convenient USB interface, the heater can be powered through a power bank or mobile phone charger, offering flexibility and ease of use. This allows you to set up your aquarium almost anywhere with available power sources.
• [Construction]: Constructed from robust quartz and metal materials, this fish tank heater is designed for long-lasting performance and reliability. With a wire length of approximately 130cm, it provides ample reach for diverse aquarium setups, accommodating tanks up to 25 liters in volume.

Features: * 8.5cm in length, 18mm in diameter, does not take up space, suitable for small desktop fish tanks. * Made of high-quality quartz glass material, you can use it with confidence. * Built-in intelligent chip controls 26 degrees Celsius constant temperature, no need to adjust * Built-in intelligent thermal sensor component automatically protects from dry burning when out of water * Filled with black gold sand to gather heat and heat up, full heat energy conversion, fast energy gathering and more power saving * Adopting USB interface design, it can be connected to a power bank or mobile phone power supply head for power supply, giving you convenience and safety. Specifications: * Product name: Fish tank heater * Material: Quartz + Metal * Color: As shown in the picture * Size: 18*85mm * Wire length: about 130cm * Temperature control range: 26℃ automatic constant temperature * Power: 10W * Voltage: DC5V * Applicable water volume: less than 25 liters Package Contents: 1 x Fish tank heater