Storage Backup: this RAVPower Filehub transfers files between sd cards, usb drives, hard disks and your devices (phone/tablet/computer) to free much more space up for your devices Wireless Router: instantly convert a wired network to wireless network. And bridge and extend WiFi, share internet securely with others Media Streamer & Sharer: seamlessly share with your families, friends and stream your videos, photos, and music on your connected smartphones, tablets, TVs, media players, Chromecast, Roku, and other DLNA devices, via App Filehub Plus SD Card USB Reader: wirelessly recognize USB flash drive, hard disk, SDHC, SDXC cards with your devices (phone/tablet/computer) via RAVPower Filehub plus APP, even more support with a usb hub Upgraded Chip & External Battery Packs: New MTK7620N core built-in chip, better performance in hardware & software. Built-in 6700mAh power bank (5V/1A) enables you to charge most of phones at least for once, without worries about low power