AquaMiracle 50W Small Aquarium Heater Submersible Fish Tank Heater Betta Heater, Easy Operation with Preset Temperature 78℉(26℃), for Tanks up to 10 Gallon

SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length. It is only 4in/10cm, a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length perfectly solves the headache of the fish keepers on the large size of the traditional heaters! Takes up less space, easy to hide, but in full power! TEMPERATURE PRESET 78℉(26℃) – Your fish love the temperature of 78℉(26℃)！This temperature preset heater makes fish keeping easier – use the suction cup to fix the heater in the aquarium, plug in, and you are done. The intelligent in-built chip will control the working condition of the heater automatically. HOW IT WORKS – Plug into the power source, the red light will be on, the heater will start working. When the water temperature reaches 78℉, the red light will be off and the green light will be on, and the heater stopped working and keeps a constant temperature of 78℉. If the temperature is lower than 64℉, red light will flash. If the temperature is higher than 97℉, red and green lights will flash in turn. DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections, this fish tank heater will stop working if the water level is lower than the minimum water level or if the heater is lifted out of water (DRY RUN PROTECTION), or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from “cooking fish”! MULTIPLE USES – This fish tank heater can be used for both fresh and marine water. It can be not only used as an aquarium heater, but can also work as a turtle heater, pet fountain heater, and plant seedling heater.