Summertime is not a lot of fun, especially when you have to stay outside working for a long time. This portable fan can help you stay cool though. It is a handheld cooling fan with a 2200 mAh battery that you can take with you everywhere you go. The fan can be charged when you connect it to your computer via a USB cable. You can also use it as a battery charger for your mobile device. Another interesting Thanko product.