Compact Size: This innovative super mini aquarium heater is "thumb size", perfect for nano tanks and betta tanks. Suitable for tanks up to 1 gallon, with a temperature range of 65-93F.
USB Power Supply: The 5V/2A USB power supply ensures safety and eliminates the worry of electric shock to your beloved fish. (Power adapter or power bank is not included)
Accurate Temperature Control: Thanks to the intelligent inverter technology and in-built chips, this thermostat maintains a constant temperature with an accuracy of 1F, surpassing traditional knob-controlled heaters.
Overheating Protection: Your fish's safety is our priority. This fish tank heater automatically stops working when the water temperature exceeds 97F, providing full protection against overheating.
Multiple Uses: Not only suitable for aquariums, this versatile heater can also be used for turtles, pet fountains, and plant seedlings. It is compatible with both fresh and marine water environments.
Mini Betta Heater with Digital Display, 10W 15W Submersible Fish Tank Heater, USB Powered, Suitable for Aquariums up to 1 Gallon