This mini heater is designed to provide a constant temperature for your pet's drinking water or small fish tank. Its compact size and USB power supply make it highly portable and easy to use. temperature control ensures that the water remains at an optimal temperature, promoting the health and comfort of your aquatic pets. Features -Color:Black -Material:Aluminum Alloy -Size:7.70X1.50X1.00cm/3.03X0.59X0.39in -Automatic temperature control: automatically adjusts the temperature based on your pet's drinking needs, ensuring a comfortable environment. -Mini and compact: small and compact design makes it suitable for fish tanks of all sizes, providing efficient heating without taking up much space -Usb powered heater: conveniently powered through a usb interface, making it easy to use anywhere with a usb port -Variable frequency design: automatically adjusts heating power based on the ambient temperature, ensuring efficiency -Easy to install: Equipped with suction cups, can be easily installed without any tools Package list: 1 x Aquarium Heater