1、LED double display, accurate constant temperature, adjustable temperature. 2、Strong suction cup, fixed will not slip, sturdy, durable and long service life. 3、With numerical control hook, drop the hook one stick to the fish tank, the other stick to the numerical control, and then hang together. 4、Ladder type heating technology, effectively reduce current consumption, temperature control and energy saving more outstanding. 5、With humanized protective cover, not only can prevent the fish from hitting the heating rod, but also can not scald the fish. 6、Containing high purity quartz sand heating medium, excellent thermal conductivity, quick heating speed, from winter to summer only need 5S. 1 x Heating Rod1 x Suction Rack1 x Numerical Control Hook Condition: 100% Brand NewItem Type: Heating RodMaterial: PlasticColor: BlackSuitable for: Fish Tank, AquariumPlug: CN PlugVoltage: 220VTemperature Control Range: 15-35℃Optional Power: 200W, 300W, 500W Power Length(cm/inch) Capacity Suitable Aquarium(cm/inch) 200W 28/ 11.02 150-200L 80-100/ 31.50- 39.37 300W 28/ 11.02 200-300L 100-120/ 39.37- 47.24 500W 33/ 12.99 400-500L 120-150/ 47.24- 59.06