New technology with precision digital control to maintain water temperature at a constant level. Built in with automatic shut off overheat protection. Titanium tube with corrosion-resistant, virtually unbreakable fast heating. LED water temperature reading. Features: * Precision digital control, maintain water temperature at a constant level * Automatic shut off overheat protection * Corrosion-resistant, virtually unbreakable fast heating titanium tube * LED water temperature reading Heaters have built-in temperature sensors which automatically cuts the power to the heater if it accidentally comes in contact with air. Maintains water temperature within +/-2ºF of the set value providing a safe, healthy, and stable temperature for your tank. Specifications: * Wattage: 100W * Amperage @ 115V: 0.9A * Recommended Tank Size (gallons): 20~30 * Power cord to wall: 45" inch * Power cord to heating tube: 27" * Heating tube length: 7"