The new Jolly Preset heater has an unbreakable plastic shell. The compact design takes up minimal space, but is practical and reliable. The temperature of the Jolly Preset Heater is configured at 25 degrees C, to ensure an ideal environment. Preset temperature requires n adjustement. Features a protected cable, an indicator light, and strong suction cups. Cable length is 6 ft. 12 Watts. Ideal for up to 3 Gal aquarium.