Bought this product to china trip and it's working great. It has an external usb charger + headphone hook up! The bag also come with locks, which is useless because you need 3 hands to lock it. First hand to open the lock, Second hold the zipper in places, and there are 2 zippers which need 2 hands. I have tried to use the locks 10 times, and it only works 1 time with a help of friend. Overall, the bag is high quality, and it doesn't get wet easily. My older brother want another one so he can put his power bank and phone inside the bag while traveling!