Adjustable 10W Betta Heater - Small Submersible Fish Tank with Digital Display Thermostat, USB Powered, for Aquariums up to 1 Gallon

Highlights

• Super Mini Size: This aquarium heater is incredibly small, measuring only 1.97" (5cm) in length. Perfect for nano tanks and betta tanks. Its innovative size solves the issue of space in traditional heaters.
• 5V/2A USB Power Supply: This heater is powered by a safe 5V/2A USB source, eliminating the risk of electric shock to your beloved fish. Simply use a 5V/2A power adapter or power bank (not included) to supply power to the heater.
• Accurate Temperature: Thanks to intelligent inverter technology and built-in chips, this thermostat maintains a constant temperature with an accuracy of 1°F, much more precise than traditional knob-controlled heaters.
• Overheating Protection: Safety is a top priority. This fish tank heater automatically stops working when the water temperature exceeds 97°F, preventing your fish from "cooking."
• Multiple Uses: Suitable for both fresh and marine water, this versatile heater can be used in aquariums, for turtles, pet fountains, and plant seedlings. It's a compact solution for various heating needs.