ITEM NAME:Aquarium Fish Tank LED Display Digital Water Heater Submersible Thermostat 220V Description Specifications: 100% brand new and high quality Fully submersible, more suitable for turtle tank, quikly trap heat Protective guard ensure safety of both the aquatic inhabitants and surrounding gear Material: Plastic Quartz glass Size: As picture shows Color: Black Display: LED Voltage: 220-240V 50-60Hz Cable Length: 150cm Power: 100W Range of Temperature Adjustment: 17-34Â °C Usage: 1. Install the heater to the glass surface inside the tank 2. When the installation is complete, plug in power supply 3. Set the temperature you need through the temperature adjustment button. Each time the temperature is increased by one digit, the temperature is automatically recycled at 17-34 degrees 4. After setting the required temperature, the number will flicker for 5 seconds, and then automatically confirm that the display will jump back to the current actual water temperature, and then rise to the temperature you set Package Include: 1*Â Aquarium Water Heater Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement..1 Aquarium Water Heater. Install the heater to the glass surface inside the tank. Protective guard ensure safety of both the aquatic inhabitants and surrounding gear. Display: LED. After setting the required temperature, the number will flicker for 5 seconds, and then automatically confirm that the display will jump back to the current actual water temperature, and then rise to the temperature you set.