Feature 1、[Safety design] This is a glass aquarium heater with a strong protective cover, which can effectively prevent fish or turtles from colliding and contacting each other. Please note that this protective cover cannot be removed. 2、[High Quality] Use high-quality quartz glass aquarium heaters, double-layer sealing materials, and advanced design to ensure safe operation. Rugged and durable, with long service life. 3、[Small and portable]Small and short, portable and light, it can lower the water level when in use. This aquarium heater has 25W low power consumption, stable performance and high reliability. 4、[Please note] The heating rod should be completely immersed in water and placed in a fluid flow position. Do not insert the heating rod into the sand, and do not allow children to touch or play with each other. 5、[Intelligent constant temperature] 26℃ automatic constant temperature, when the water temperature reaches the specified temperature value, the heater automatically stops heating, when the water temperature is lower than the set temperature, the heater starts to heat automatically. Colour: Black Power: 25W Material: Quartz Glass Size: 12cm in length, 2cm in diameter Specification: European standard, American standard Function: Universal for both sea and fresh water, automatic constant temperature of 26 degrees, can be used at low water level. Package List Fish tanks heating rod *1 Note 1. The heating rod must be fully immersed in the water and placed in a position where the water flow is smooth. 2. Do not insert the heating rod into the sand to use. 3. Please put the thermostat in a dry place. 4. Do not let children touch and play. 5. Do not disassemble or assemble the product by yourself.