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: 4.33"x 3.54"x 1.38" (11 x 9 x 3.5 cm)
Quantity: 1PCS

Package Included
1 x Box Fan
1 x Charger
1 x USB Cable
1 x 18650 battery