Lots of appealing features have been integrated into this product such as fine workmanship, elastic and shockproof design, long service life, mute, low noise, humanized cable design, easy installation, etc. Large fan blades can provide more air volume so it has a good heat dissipation effect and can help you cool down your computer quickly. Made of high-quality ABS and metal materials. It is durable and reliable for long-term use. The length of the case fan is 12cm, the width is 12cm and the height is 2.5cm. It is suitable for computer case and can be used for home, office, etc. Item Name: Case Fan Material: Metal,ABS Number of Blade: 7 Fan Speed: 1100±10 Percent RPM Air Volume: 16±10 Percent CFM Noise: 20±10 Percent dB(A) Fan Bearing: Hydraulic Bearing Interface: Small 3-pin + Big 4-pin Life Span: about 40000 Hours Features: Fine Workmanship, Mute, Long Service Life Size Details: 12cm x 12cm x 2.5cm/4.72" x 4.72" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Case Fan