[This review was collected as part of a promotion.] This device is a good extension on any USB-C phone. It easily allows you to upload and download files between devices, connect an external hard drive, or even charge another device. I used this with a pair of USB headphones, it transferred plenty fast to support high quality audio to that device. There was no stuttering, and playback went on without any issues. The flexible cable is much more convenient than the small adapter you can attach to the bottom of your device, as it lets you position much more conveniently. Overall, I have had no issues with this product, and its nice that it supports USB 3.0 as well.