Key benefits Provides stable, adjustable water heating for small tanks and pet water bowls, reducing stress from temperature swings. Simple digital control and USB power make it easy to install and operate on desktop setups or small enclosures. Built with nichrome heating element for reliable heat transfer and consistent performance. Main features Material: nichrome wire heating element for efficient, durable heating. Control: digital LED display for straightforward temperature setting and clear readout. Temperature range: adjustable from 18 to 34 degrees (°C). Safety: automatic poweroff when the temperature exceeds the unit's safety limit. Power: USB powered heating rod for flexible placement and use with common USB adapters, power banks, or USB outlets. Why you need it Maintains a steady, appropriate water temperature for delicate species and young animals. Reduces the need for frequent manual temperature checks and interventions. Compact USB design fits small tanks and portable setups where fullsize heaters are impractical. Practical applications (use scenarios) 1. Fighting tanks and mini tanks: Keep small aquaria at a stable temperature for species that require consistent warmth. 2. Turtle tanks and horned frog enclosures: Provide gentle, adjustable heat for amphibians and reptiles that share water bowls or shallow aquatic areas. 3. Pet drinking water: Maintain slightly warmer drinking water for pets in cool environments to encourage hydration. Compatibility and performance notes Designed for smallvolume water applications (fighting tanks, mini tanks, turtle tanks, horned frogs, pet drinking water, etc.). USB power offers flexible installation but verify USB power source suitability for continuous use. Digital control simplifies temperature adjustments; follow the display and settings on the unit for accurate results. Built for easy integration into small tanks and pet water containers where space and convenience are priorities. Use and safety tips Place the heating rod securely according to the product instructions so it is fully or appropriately submerged as required. Use a reliable USB power source and avoid prolonged exposure to ambient heat. Monitor the first few hours of operation to confirm the heater maintains the desired temperature and that the automatic safety shutoff functions as expected.