►Tiny Cooling USB Fan: WINSINN 40mm mini USB fan which micro size and lightweight design, suitable for DIY cooling and narrow place. 5V USB Powered, allow you to use it in any places with USB power supply, convenient, perfect for Home/Office/Business trip.

►High quality Dual Ball Bearings, 5-years Warranty. balance between high air volume and low noise, Suitable for 24 hours / day long-term work, long life: 50,000 Hours.

►Rated Voltage: DC 5V, Current: 0.15A, Power: 0.75W, Speed: 5100PRM, Air Pressure: 2.31mmH₂O, Airflow: 5.56CFM, Noise: 22.6dBA

►Connector & Cable length: USB – 11.8in(300mm), Size: 40mm x 40mm x 10mm

►Widely Used: Suitable for ventilation of Small PC Case / Router / Raspberry pie / TV box / VR glasses and any small electronic equipment cooling ventilation.

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Package include:
►4 x 4010 USB Fan 5V – 39in(1000mm) - Dual Ball Bearings