1、EXPLOSION PROOF: Fish tank heater with quartz explosion proof glass safety heating, heat and cold resistance, providing double explosion proof protection. 2、IP68 WATERPROOF: This submersible aquarium heater has IP68 high level airtight waterproof, double airtight structure to ensure that no water drips through. 3、ADJUSTABLE TEMPERATURE: The fish tank heating rod is adjustable by rotating, precise control of the required temperature of the fish tank, simple and easy to operate. 4、AUTO CONSTANT TEMP: Aquarium heating rod has a built in thermostat that will automatically keep the water at the set temperature and provide a stable heat output. 5、SAFETY DESIGN: Aquarium heater with safety upgrades double protection design, ABS protective cover to prevent scalding fish, while avoiding damage to large fish collision. Item Type: Aquarium Heater Material: ABS, Quartz Glass Use: Fish Tank, Aquarium Heating Rod Adjustable Temperature: 16-32℃ 1 x Aquarium Heater