FEDOUR 10W Super Mini USB Aquarium Heater, Small Adjustable Heater with External Controller for up to 2.5 Gallon Small Fish Tank, Nano Fish Tank Heater, Betta Heater for Fish Bowls

【Super Mini, USB Aquarium Heater】USB heater, output voltage 5V, more convenient and safe to use, plug adapter not included. 10W aquarium heater is very small and short with its length of 1.6in/4cm, so that the finger-sized heater is very easy to hide in the fish tank. 10W mini heater suits for up to 2.5Gallon nano fish tank, betta tank, fish bowl, desktop aquarium.

【External Temperature Regulator】No more wet hands when adjusting the temperature. When setting the temperature, turn the set temperature to the green light, and the red indicator above will light up when heating. Temperature range is 64-93°F. 4.9ft/1.5m long power cable, easy to control the temperature outside the fish tank.

【Memory Function】This small heater has a power-off temperature memory function, that is, the temperature setting of the heater after a sudden power failure will be automatically consistent with that before power failure, and there is no need to reset. After power on, the temperature setting is automatically restored.

【Sturdy and Durable】This fish tank heater is made of high-quality thickened quartz glass, which is high temperature and corrosion resistance, so it can be used in both fresh water and saltwater tank, betta tank, turtle tank. Low power heater can effectively prevent overheating, and with great sealing performance, water won’t enter this mini heater, providing a better living environment for the fish.

【Package including】Come with a mini heater connecting its power cable and a sticker thermometer, 1 powerful suction cups to firmly attach the heater to the inner wall of the tank, 1 bottom cover to protect the heater and prevent the heater directly touch the bottom of the tank. We provide 12-month warranty.

【Note】Please use a plug adapter with a power greater than 10W (5V/2A).