Wind and low noise motor Gently slows heat and facilitates cooling. Equipped with a fan holder that can change the direction of the wind, suitable for aquariums. There is a cheap and full protective net to prevent scratches. The adjustable width of the fan and bracket reaches 100°, which is highly adaptable and convenient to install and transport. Aluminum alloy material bracket gives the fan a long life and strong support. There are two adjustable speeds, the wind speed is selected according to the indoor temperature, and the temperature can be reduced by 2-3°. (1 to 4 heads are 2 speeds, 5 heads and 6 heads are only 1. Protective net design: Avoid damage caused by improper use. Specifications: Length: 1FAN: 4.1 inches (10.6 cm), 2FAN: 8.0 inches (20.3 cm), 3FAN: 15.4 inches (29.8 cm), 4FAN: 15.4 inches (39 cm), 5FAN: 18.9 inches (48 cm), 6FAN: 220 inches (57 cm), Transformer Output: DC 1 cm), AC Voltage: 1 cm); Power Supply Adapter. Note: 1. accidentally fan If it falls into the water, please remove the power fan before pickup. 2. If the cord is damaged, please replace the power cord. 3. Wet hands cant touch or plug in to prevent electrical shock. 4.Install the fan out of reach of children.