USB Mini Aquarium Heater

A submersible USB powered aquarium heater, perfect for tanks 2 litres (0.5 gal) or smaller. This heater allows you to set the temperature to your choosing, while the built in thermostat turns the heater on and off as needed to maintain the desired temperature. Additionally, this heater gives you a constant temperature reading, essentially working similarly to a thermometer.

The USB powered aquarium heater can easily switch between Fahrenheit and Celsius settings.