LNtech Portable Mini USB Fan,4 inch Vanes 3 Speeds Adjustable Mini Desktop Fan Portable Mini USB Rechargeable Cooling Fan with 18650 li-ion Battery for Office Home and Travel (Blue)

this is a mini rechargeable the USB fan comes with what you see here a cord and the fan and the way it works is you charge it up via the USB and then these lights when all three lights are lit at the bottom that means it is fully charged so what I did is I went ahead and I fully charged it and then I turned the fan speed on low and I tested to see how long the fan would work on battery power so I started at about 6:30 this morning and about ten thirty four hours later it just kicked off it didn't slow down gradually it just it was on and then it was off so it it's nice in that way that it doesn't lose power it will just keep going keep going keep going and then all of a sudden quit so four hours on the slowest speed and you can expect probably a little less time on the medium and high speeds but I charged up just a little bit it's not fully charged right now but I wanted to show you how