Won Brothers - 500 watt Heater 500 watt Titanium Pro-Heat aquarium heater with remote temperature controller. Unbreakable corrosion resistance Titanium heating tube. Double heating tube.   • On-Off heating light and power indicator   • Fully submersible and can be mounted either horizontally or vertically   • Automatic protection device activates when sensor is disconnected or shorted   • Durable, Reliable, Safe & Easy to operate   • Heating tube is 16-1/2 inches long. Aquarium IC (integrated circuit) thermostat uses IC to control the heater to adjust desired aquarium temperature. Operating temperature range: 60 to 93 degrees Fahrenheit. Power cord length is 6 feet long to heater, and control has additional 6 foot cord to plug into wall outlet. For use in saltwater or freshwater. Full one year warranty.