Are you looking for a professional, yet affordable aquarium heater? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional aquarium heater must meet you needs. It is one of the best choices for you. Features - Color: As show. - Material: Plastic, quartz. - Size: About 10.00X3.00X2.00cm/3.93X1.18X0.79inch. - Power: 25W. - Made of high-quality plastic and quartz materials, it is practical, safe and durable. - This heating rod has a mini size design and can be used in most sizes of fish tanks. - It has a high-quality temperature sensor that can automatically maintain a constant temperature, which is safe and energy-saving. - The rod body is made of explosion-proof quartz glass, which can be used more safely. - The external temperature adjustment device allows us to adjust the temperature more safely.