etwiw hand mini usb personal fan - rechargeable portable headphone design wearable neckband fan,3 level air flow,7 led lights

[led lightening & colorful flashing]-- it's updated lightening cooling fan. it has three modes (seven color lights,white light,no light), so it's more safe and cool to bend the silicone arm y for a variety of scenes, sports, desk, office, travel, etc [usb rechargeable fan]-- usb rechargeable mode. built-in 2000mah lithium battery 3-4 hours fast charging, batter life about 2.5-6 hours (high speed 6 hours, medium 4 hours, low speed 2.5 hours normal working time). make you cool in the summer.