1. material: ABS protective case ensures fast heat dissipation and enhanced safety. Featuring triple layer sealing and a waterproof design, it provides reliable protection for your aquatic life. materials not only ensure safety but also extend the product's lifespan. Suitable for ponds, aquariums, and heaters. 2. PTC ceramic heating chip: Delivers even heating, rapid heat conduction, and minimal heat loss for long lasting performance. More efficient than traditional heating wires, it saves energy while being explosion proof. The plastic casing safeguards the ceramic heating chip, preventing fish from burns. 3. Adjustable: The heater's temperature can be easily set using the scale on . It automatically stops heating once the desired temperature is reached. For large aquariums or tanks over 2 meters long, two heaters can be used together for performance. 4. Easy installation: Includes 2 strong suction cups for secure placement at any angle, ensuring the heater stays submerged. Always keep the heater fully underwater—never expose it above the surface or bury it in sand. Ideal for pet supplies, aquariums, and heating applications.