Description: USB heating tie, temperature can be adjusted from 18 to 34 degrees, automatic power output when the temperature exceeds 36 degrees. Mini size, saving space in the fish tank and looks more beautiful. Digital LED display, the adjustment accuracy is 0.5°C or 1F, and the display accuracy is 0.1°C, simple operation. Suitable for fish tanks, mini tanks, turtle tanks, horned frogs, pet drinking water, etc. Specification: Material: Nichrome Wire Size Chart: Size: 5.5x2cm/2.17x0.79inch Package includes: 1 piece of fish-fish heater