Features: The function of the eye protection-lamp is also excellent to solve-problems such as screen reflection and-glare, and use more comfortable light to reduce eye fatigue. Solve the problem of screen reflection, etc. With a more comfortable light, reduce eye fatigue. The duct is lengthened to 26cm, and the air outlet area covers a wider-area and cools down faster than traditional desktop fans. True-personalization the wind speed is adjusted at will others are 3 or 4 gears, and we have as many gears as we want. 120 large wide angle natural blowing the air guide is 45 adjustable and does not blow in the face. Specifications: Material:ABS Size: Approx.26.6x9.12x4.7cm/10.47x3.59x1.85inch Color:Black Additional features: nightlight Motor type: brushless-motor Built-in battery: removable battery. Built-in battery capacity: 1200mA-2000mA Power supply mode: lithium-battery Wind speed gear: 6th gear. Duration: 3-6 hours Function: eye protection-lamp; Color temperature and brightness are adjustable; Infinitely regulated wind speed Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Computer Fans