Specification: · Output air volume: · 1-Speed 873 L/Min (work time about 2 hours) · 2-Speed 459 L/Min (work time about 4 hours) · 3-Speed 242 L/Min (work time about 8 hours) · Output power: 4 W (Max) · Battery: 18650 Lithium-ion battery · Charger: Input: 100-240V AC · Output: 5V 1A DC · Charging time: about 5 hours · Dimension : 140x105x42(mm) · Quantity: 1PCS Product Features: · Unique structure. fashionable · Small and exquisite. easy to carry · Ball fan. wind strong and durable · Digital control. simple operation · Machine welding. stable and reliable · 18650 Lithium-ion battery. lasting power · Battery is removable. easy to replace · USB connector. easy to charger · High efficiency and low loss. energy saving and environmental protection Package Included: 1 x Box Fan 1 x Charger 1 x USB Cable 1 x 18650 battery Product Description Fashionable USB mini portable fan . Can Power by both battery and USB cable. 6 beautiful color for choice!