This DaToo 10 Watt Small Aquarium Heater is perfect for those who want to keep their fish warm and comfortable. It is easy to use and comes with a range of features that make it ideal for aquariums of all sizes. The heater is designed to be submerged in the tank and has a tank capacity of 10 gallons.The heater is made by DaToo, a trusted brand that offers high-quality aquarium products. It is a limited time offer and comes with fast shipping, making it a great gift for all aquarium lovers. The package length is 30 inches, and the model number is S-10. This heater is perfect for those who want to maintain the ideal temperature for their fish, and it is compatible with most aquarium setups. USED BUT WORKS GREAT.