256GB 4-in-1 metal USB Flash drive Mobile phone computer dual-use Mini USB flash drive Support Type-C USB iOS devices Features: USB3.0 interface, fast read/write speed, easy to transfer pictures, files, etc. Zinc alloy material, wear-resistant, shockproof and anti-fall, effectively protects your valuable data. Small size, not occupy space, easy to carry and use. No driver required, plug and play. 4-in-1 design, suitable for PC, laptop, Type-C/Micro USB mobile phones, also suppprt iOS devices.(The Type-C, Micro USB phones need to support OTG function) Specification: Brand: Color: Silver Capacity: 16GB/32GB/64GB/128GB/256GB(optional) Shell material: Zinc alloy  USB interface: USB3.0 Read speed: 65MB/s-86MB/s Write speed: 28MB/s-38MB/s Item size: 4.7 * 4.7 * 0.4cm /1.85 * 1.85 * 0.16in Item weight: Approx. 12.6g /0.44oz Packing list: 1 * U disk