This mini heater is Ideal for maintaining a consistent temperature in small fish tanks and pet water bowls. Its USB-powered design allows for easy and flexible use, whether at home or while traveling. temperature control system ensures that the water stays at a comfortable temperature, promoting the well-being of your aquatic pets. Features -Color:Black -Material:Aluminum Alloy -Size:7.70X1.50X1.00cm/3.03X0.59X0.39in -Consistent heating: maintains a stable temperature to ensure the wellbeing of your aquatic pets, preventing harmful fluctuations. -Spaceefficient design: its mini size allows it to fit seamlessly into any fish tank, making it ideal for both small and large tanks -Usb powered heater: easily powered by any usb port, providing flexibility and convenience for various setups -Intelligent heating: the variable frequency design adapts to changes in the environment, providing efficient and consistent heating -No tools needed: Thanks to the suction cups, installation is a breeze and requires no additional tools Package list: 5 x Aquarium Heater