Low power， low noise， long life. This convulsion cooler will help you work better with your computer.Features:Convulsion design， make it more efficient 3 sucker， it is more 5.5 DC high cost impact resistant plastic material， compression wear-resisting resistance to fall adjustable damping non-slip strong wind hole is equipped with two silicone ventilation， suitable model is more turbine fan， heat dissipation， long life fully support the mainstream size laptop heat dissipation. Specifications: Voltage: 5V DC Power: 3W Material: ABS Color: black / white / blue ( optional ) Fan speed: 3000 RPM USB cable: 51cm / 1.67ft Item weight: 100g / 3.55oz Item size: 8 * 15.5 * 3cm / 3.14 * 6.10 * 1.18in ( L * W * H ) Package weight: 140g / 4.93oz Package size: 16 * 10 * 3.5cm / 6.29 * 3.93 * 1.37in ( L * W * H ) Package list:1 * Radiator2 * Silicone