This aquarium cooling fan is designed to efficiently lower the water temperature in fish tanks, ensuring a comfortable environment for fishes. Featuring a sleek and compact design, it blends seamlessly with your tank setup. The adjustable speed function allows for precise cooling control to suit various tank sizes and needs. Features -Color:Black -Material:Plastic -Size:13.30X7.00X5.70cm/5.23X2.75X2.24in -Powerful cooling performance: effectively reduces fish tank temperature, creating a comfortable environment for tropical fish and ensuring their health and wellbeing -Adjustable speed design: features adjustable speed settings to cater to different seasons and needs, maintaining stable water temperatures for optimal aquatic conditions -Quiet operation: operates with minimal noise, providing a peaceful viewing experience suitable for homes, offices, and other quiet environments -Durable and useful: built with plastic materials to ensure stable performance and resistance to damage, making it a dependable choice for aquarium cooling -Precise temperature control: prevents overheating that can harm aquatic plants, promoting balanced ecosystem growth and supporting healthy water conditions Package list: 4 x Aquarium Cooling Fan