SanDisk Wireless FLASH Drive USB features the following;

Interface: Wi-Fi USB 2.0
The next generation of storage doesn’t require wires or internet to get to your stuff

Form factor USB flash drive
Charging USB port for charging, up to 2 hours for a full charge; up to 4.5 hours of continuous usage
System requirements Connection:
802.11n 2.4GHz Wi-Fi and USB 2.0

Mobile device:
iOS version 8.0 or higher, Android version 4.2 or higher

Wi-Fi enabled devices:
Web browser

PC or Mac computer:
Windows® 8, Windows 7, Windows 10, Windows Vista®, or Mac OS 10.6 or higher
Security: Optional Wi-Fi password protection
Maximum File Size <4GB (16GB, 32GB versions), limited only by capacity (64GB versions)
Dimensions 0.82 x 3.08 x 0.48 in. (20.83 x 78.21 x 12.19 mm)
Weight 0.048 lb (21.76 grams)
Operating temperature 32° - 113° F (0° – 45° C)
Storage temperature -4° - 158° F (-20° – 70° C)