“Happyline” Folding Portable Telescopic Floor/USB Desk Fan. 【Multifunctional Fan】With unique foldaway telescopic design, the telescopic fan combined standing fan with desk fan. The foldaway fan can be folded to a small size, you can take in your backpack to everywhere. Meanwhile, the 3 in 1 oscillating fan can save you much money because you needn’t to buy various of fans. 【Height Adjustment Automatic Oscillation】The height of the standing fan can be fully adjusted from 4.3″ to 43.7″. In addition, the oscillating fan can automatic oscillate 90 degree horizontal and rotate 180 degree vertical, wherever you put it on your desk or the floor, which can make your cool from any angle. 【Largest Battery Capacity】The rechargeable folding fan comes with a 10000mAh battery capacity, which can work 5-20 hours with different speeds. Whatever you sleep or want to go out, you needn’t to worry. The battery operated fan can cool your whole summer. 【Super Quiet with 3 Speeds 】With 3 speed settings of the portable desk fan, the portable folding fan can reach 2.4m/s-4.3m/s, it has a strong airflow. With a upgraded technology, the battery operated standing fan is super silent even if at the largest speed, allow you to enjoy a peaceful sleeping, studying or other important things. 【USB Charging Port】The rechargeable portable fan can be fully charged within 6 hours. The USB standing fan is powered by USB(2A) and compatible with PC/laptop, power bank, AC adapter, car charger, and other USB-enabled power supply. “Happyline” Folding Portable Telescopic Floor/USB Desk Fan with 10000mAh Rechargeable Battery,4 Speeds Super Quiet Adjustable Height and Head Great for Office Home Outdoor Camping.