UA10 Micro-USB to USB-A OTG adapter, zinc alloy shell, supports charging and data transfer with elastic lanyard1. Sizes: length 3.2cm * width 1.5cm * thickness 0.8cm. Weight: 7g.2. Micro-USB plug to USB jack, supports OTG function for Micro-USB phone, you can plug USB flash disk, mobile hard disk (or other USB peripherals), can read data. Measured capacity 1T hard drive can be used normally.3. You can also use the Micro-USB / Type-C or Lightning data cable to read Android or Apple phone internal data, and charge these phones.4. Zinc alloy shell material.5. For charging and data transfer, portable, convenient and practical, with elastic lanyard.