This buy was such a success that i bought 3 more for family members. Unfortunately 2 got wet at an outdoor music festival and quit working. However I will buy again to replace those. So they are not waterproof. The air flow was perfect. Has a flashlight. It can charge a phone but it’s an either fan or charger due to battery life. The battery was decent when used as a fan. The weight was fine. It collapsed easily fitting in a purse or festival bag. The fan did work in the southern Atlanta heat, I think temperatures that day were 85 with very little breeze. It was a nice relief. Very little sound. I saw some people complaining it’s hard to open but we had no trouble. I bought pink, blue, white, & black.