Product features:LED lighting functionMobile power supply can be done using3 speed, depending on whether you need to debug your air flow.4. Industrial grade 5W brushless motor fan (4 inch), air flow and long life.Silicone bracelet which can be attached to backpacksAdopting international standard 18650/3. 7V/optional 1200MAH/2000/2000MAH large-capacity lithium-ion batteries provide longWith time and a strong power outputUSB interface rechargeable, charging time is approximately 6 hours.Air time: l for about 2 hours, 2 about 4 hours, 3 spans about 8 hours.Fan three features:A: a charge to go into USB port directly.II: three wind turbines can be adjusted, Breezes to strong winds freeThree: comes with LED lights, power failure emergency essentialFour: move the power function can be recharged
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