Designed for ease of use, this mini heater is ideal for maintaining a stable temperature in small fish tanks and pet water bowls. The USB power supply offers flexibility, allowing you to use it in different locations. The temperature control feature ensures that your pets always have access to water at a consistent temperature. Features - Color: Black - Material: Aluminum Alloy - Size: 7.70 x 1.50 x 1.00 cm / 3.03 x 0.59 x 0.39 in - Automatic thermostat: Automatically regulates the temperature to meet the specific needs of your pet's drinking water, ensuring comfort - Miniature design: Its compact size is ideal for all fish tanks, providing effective heating without occupying much space - USB heating rod: Powered by a USB connection, it offers easy and flexible usage in various settings - Frequency conversion: Adjusts heating power based on environmental temperature changes, ensuring efficient energy use - Convenient installation: Featuring suction cups, it allows for simple installation without the need for tools Package list: 1 x Aquarium Heater