Its slim profile and unobtrusive design allow the tiny heater to fit perfectly inside micro tanks and mini aquariums. This heater provides the natural warmth that fish like bettas and guppies need by heating a 3-10 gallon tank or bowl to the ideal temperature.<br><br> <b>Overheat Protection</b><br> Intelligent temperature control circuit promises an automatic safety shut-off and overheat protection.<br><br> <b>Remote Temperature Regulate</b><br> Easy to change the temperature without touching water. <br><br> <b>On/Off Indicator Light</b><br> Red: Aquarium temperature is below set range, heating function will engage and increase temperature automatically.<br> Blue: Aquarium temperature is within desired set range, monitoring function is engaged.<br><br> <b>Specification: </b><br> Product Dimensions: 4.6 in×2 in×1.2 in<br> Temperature range: 68℉ -94℉<br> Cord Length: 3.1 ft<br> Power: 50W<br><br>