Siivton Handheld Fan, Mini Personal Portable Fan Desk Table Cooling Electric Battery Operated Fan with USB Rechargeable for Outdoor Camping Travel Home Office Handheld /Desk Fan Battery Operated Design-- Multifunctional handheld fan when indoor desktop fan and outdoor portable fan, comfort handheld convenient to hold in hand, and fits your handbag with its palm-size. With removable bottom base, put it on the table, enjoy leisure time hands free. A must- have mini fan for the beautiful summer to cool you down whenever you go Rechargeable USB Power--This personal fan battery operated features a built-in rechargeable 2000mAh Li-ion battery with a USB port recharge model, USB cable included can be charged with computer, mobile power, power bank and other USB-enabled devices. This electric fan charge needs 4Hours Strong Airflow Three Adjustable Speed Level-- Low-medium-high speed level. Adjust appropriate fan speed by pressing the power button repeatedly. Long working time, the service time is about 5.5 hours for low gear, about 3 hours for medium gear, about 1.5 hours for high gear with full charge battery Quiet Office Fan --Quiet and Low noise when operate the low gear make it ideal for an office job or for sleeping if it's mostly quiet in the building, so this fan would add zero background noise and wouldn't annoy anyone Portable Lightweight Design--When you go outside, you can put it in the bag with you, especially suitable for summer travel or outdoor sports, you can take it to anywhere, like NBA/World Cup Qualifiers/Football Game/or any activity