Perfect for freshwater or saltwater useAll Ebo Jager heaters are black and have a 6 foot double insulated power cordHeavy duty 2mm thick shock resistant Pyrex glass construction is twice as thick as most other heaters and far strongerTemperature is adjustable from 65°F and 93°F with an easy to adjust thermostatPrecision bi-stable thermostat with an impressive +/- 0.5° accuracyFree from radio and TV interferenceNote: Although this heater looks just like the Ebo heater that we've been selling for years, it is now made by Eheim and the instructions specify that the heater can only be submersed up to a line about 1/2" from the top of the unit.Ebo Jager has over 50 years of experience manufacturing high quality aquarium heatersTemperature range: 65-93 degrees Fahrenheit