Features: brand new and high quality High-speed transmission, easy second transmission: dual USB design, one-piece dual-use, plug and for play USB3.0 true high-speed, high-speed transmission, no heat and freeze Dust-proof cap, upgraded metal model: powerful, newly upgraded zinc alloy material, high-precision cutting and tight fitting, high-end quality, for stronger and more durable Mobile phone OTG function, USB3.0 two-way transmission, mobile phone connected to U disk, no data flow,movies/documents/pictures can be read at any for time Mobile phone or tablet, double USB to connect keyboard and mouse in seconds, office efficiency is higher, typing speed is one step faster Quality is guaranteed, please rest assured to buy Specifications: Material:Zinc Alloy Size: Approx.59x27.5x7.6mm/2.32x1.08x0.29inch Note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1PcxOTG Adapter Converter