- Digital Display: The mini aquarium heater features a clear LED display that shows both the set temperature and the current water temperature in real time. Equipped with a high-precision temperature sensor and high-temperature protection, it ensures optimal conditions for your aquatic friends. - USB Power Supply: Designed for convenience, this heater can be powered via USB, making it compatible with rechargeable batteries, computers, car chargers, or any USB power source. This versatility allows for easy usage in various settings. - Automatic Thermostat: Utilizing a PID computer control system, this mini heater features a copper wire heating element and an explosion-proof quartz tube. It heats quickly, ensuring your aquarium maintains a stable temperature while being energy-efficient and safe. - Memory Function: The heater is equipped with a power failure memory function, which means it remembers the last set temperature even after a power interruption. This feature guarantees that your aquarium returns to the desired conditions without manual adjustments. Use Scenarios: 1. Ideal for small aquariums, this heater is perfect for maintaining consistent water temperatures in fish tanks, ensuring the health and comfort of your aquatic pets. 2. Great for temporary setups, such as when you need to transport fish or set up a new tank, as it can easily connect to various USB power sources. 3. Suitable for both freshwater and saltwater aquariums, providing versatile heating solutions for a range of aquatic environments.