Yescom New 2X 25W Aquarium Water Heater Submersible Fish Tank Adjustable Fresh & Salt Water Great for both fresh and salt water aquarium, and easy to install Upgraded electronic thermostat controls the temperature with high accuracy, and will be shut off automatically when the temperature is reached Temperature range: 64&deg;F-90&deg;F(18&deg;C-32&deg;C) Material: shatterproof glass | Voltage: 110V, 60Hz | Power: 25W Package Contents: 2x Aquarium Glass Heaters, 2x Suction Cups, 2x Manual