Advanced Design Double seal material Ensuring safe operation. Automatic adjustment temperatures. Advantages: Intelligent and electronic chip and use of good sensors ensure the output of heat exactly that is fit for water being heated. Completely submersible New generation solid state electronics heralds a new era in reliability. Specifications: Model: RS. Power: 25 W. Voltage: 220 V-240 V. Frequency: 50 Hz-60 Hz. Package Included: 1 x Aquarium Heater.