YND Handheld Fan Mini Fan 4000mAh Portable Fan with LCD Display USB Personal Fan with Lanyard Battery Operated Fan 4 Speeds Adjustable Foldable Desk Fan for Office Home Outdoor Travel Camping

Why choose our mini handheld fan? -Built-in 4000mAh rechargeable battery, working time 4-15 hours. -Provide strong wind and low noise operation. -Upgraded LCD battery display with clearly see the electricity usage. -Light design can be carried around and used anytime, anywhere. -Foldable and lanyard design allows you to easily support your personal fan firmly on the desk in the office or hang it around your neck to keep it cool while working. Specification: Battery Capacity: Built-in 4000mAh polymer battery Working Time: 4-15hours (depending on different fan speed) Charging time: about 3 hours Power Supply: 5V/2A Product Dimensions: 1.53x3.18x6.73inch Item Weight: 0.33lb Wind speed: 1 speed: 1.2m/s; 2 speed: 1.4m/s; 3 speed: 1.6 m/s;4 speed: 2.4 m/s Functions: Fit for home, office, and even outdoor camping Package: 1 x Mini Handheld Fan (Battery Included) 1 x USB Charging Cable 1 x User Manual 1 x Lanyard