This item is made of high grade material, which is durable, anti-corrosion and eco-friendly. Adjustable temperature 17-35, maintaining the uniform temperature of the fish tank. Anti-explosion with fast heat transfer rate, safe, reliable and also energy-saving. Features: Made of high grade material, which is durable, anti-corrosion and eco-friendly. The glass shell is anti-explosion with fast heat transfer rate, safe, reliable and also energy-saving. Adjustable temperature 17-35, maintaining the uniform temperature of the fish tank. With the suction cup design, easy to be fixed. Provide optimum aquarium water temperature, easy and convenient to use. Specification: Type: Fish Tank Heater Plug: EU (If you need any adapter, please make a note.) Voltage: 220 V Wire Length: 90cm/35.4in Material: Plastic + Metal + Glass Temperature Range: 17-35 Power: 25W, 50W, 100W, 200W, 300W (Optional) Length/ Power: 20.5cm / 8.07inch (25W), 20.5cm / 8.07inch (50W), 26.5cm /10.43inch (100W), 30.5cm /12.1inch (200W), 30.5cm /12.1inch (300W) Power Cable Length: 80cm / 31.50inch Package Include: 1 x Fish Tank Heater Note: Dear customer, Please rest assured to buy without worrying about the plug adaption. We will provide an adapter for you according to different country standard and ensure its normal use. 1Made of high grade material, which is durable, anti-corrosion and eco-friendly. 2The glass shell is anti-explosion with fast heat transfer rate, safe, reliable and also energy-saving. 3Adjustable temperature 17-35, maintaining the uniform temperature of the fish tank. 4With the suction cup design, easy to be fixed. 5Provide optimum aquarium water temperature, easy and convenient to use.