Color as shownSize: 6.5 x 10.5 cm weight:100g High quality plastic construction, powerful fans. Increases air movement to reduce heat and humidity. There are 2 adjustable wind speeds, according to the indoor temperature, reduce the water temperature and lower it to 2~3°C.No assembly required, easy and convenient to use. The quiet motor system has been carefully tuned to make the fan 30% quieter than before. Adjustable jaws can clamp the cylinder wall with a thickness of 1.2 cm, which allows for everyday use of all aquariums.