Fish Tank Heater, 8.5cm Automatic Constant Temperature 26° USB Small Thermostat Built-in Intelligent Chip Controls For Aquarium Power

• 【Compact Design for Small Aquariums】: The fish tank heater measures only 8.5cm in length and 18mm in diameter, making the compact highly suitable for small desktop fish tanks under 25 litres without occupying valuable space, blending discreetly with aquarium décor while delivering efficient heating.
• 【Automatic 26°C Constant Temperature】: Equipped with a built-in intelligent chip, the aquarium heater maintains a steady 26°C water temperature for tropical fish without manual adjustment, supporting a stable aquatic environment that promotes healthy fish activity and forestall‌ temperature fluctuations from impacting aquatic life.
• 【Advanced Safety Mechanism】: The fish tank heater integrates an intelligent thermal sensor component that automatically stops heating when out of water, forestall‌ potential dry burning and damage, reliable operation and safeguarding aquatic habitats from overheating incidents.
• 【Efficient Quartz and Black Gold Sand Heating】: Constructed from long lasting quartz glass and filled with black gold sand to gather heat efficiently, the aquarium heater achieves full heat energy conversion, warming, enhanced energy saving, and stable temperature output for consistent comfort in tropical fish tanks.
• 【Convenient USB Power Interface】: Designed with a DC5V USB interface, the fish tank heater connects easily to a power bank or mobile phone power supply head, enabling versatile use at home or office setups, providing safe, portable, and adaptable heating for aquariums without complex installations.

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 for 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, heat energy conversion, fast energy gathering and more saving * Adopting USB interface for 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