With USB2.0 high-speed interface, this card reader can transfer 1GB movie in a few seconds. And it supports dual card reading at the same time without installing APP. It is easy and convenient to use this OTG card reader because it is plug and play. Featured with intelligent chip, this card reader has high-speed and stable charging and data transfer. 2 In 1 card reader is constructed of ABS material. The length of this product is 5.15cm, the width is 1.9cm and the height is 1.1cm. Card reader is universal for mobile phones and computers,and is compatible with multiple systems. Item Name: Card Reader Material: ABS Interface: USB 2.0 Support Memory Card: SD-card, TF Installation Method: External Operating System: for Windows, for Android Micro OTG Operating System Features: High Speed, Plug and Play, Support Dual Cards Size Details: Size: 5.15cm x 1.9cm x 1.1cm/2.03" x 0.75" x 0.43"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Card Reader