Features:1. High quality electric resistance wire, uniform heating, durable and long service life.2. Double layer waterproof insulation, can control water temperature, easy to adjust and read the temperature.3. Power indicator lights up means the heater is starting to work, when the water temperature reaches the specified temperature, power indicator will automatically turn off.4. High resistance heating wire, double waterproof protection, long heating life.5. Equipped with 2 powerful suction cups, reinforce the heating rod to prevent from falling.Specification:Condition:100% Brand NewItem Type: Aquarium Water HeaterModel: HX-906Material: ABS Color: As Pictures ShownPowerSize(mm/inch)Aquarium Size(cm/inch)25W197x23/7.76x0.91Below 20/7.8750W197x23/7.76x0.9120-35/7.87-13.78100W230x23/9.06x0.9135-60/13.78-23.62200W280x23/11.02x0.9160-80/23.62-31.50300W312x23/12.28x0.9180-100/31.50-39.37Install and Use:2. Place the heating rod in water and electrify it in the following position: completamente submersible, part submersible, put across at cylinder bottom.Packing List:1 x Aquarium Water Heater2 x Suction Cup Bracket.