DescriptionSuperSpeed USB 3.0 Reader with OTG funtion base on Easy portability design, with build-in mirco SD slot, it is able to store the mirco SD inside the memory reader, and don't need to worry about losing the cards.Features- Color: Black. - Material: Plastic. - Size: 7 x 2 x 0.5 cm. - Portable, easy to carry outdoor. - Sleek appearance, minimalist atmosphere, beautiful and convenient. - Metal plug, using material to build, to ensure stable data transmission. - Wide compatibility, supported cell phones laptops and most of Micro USB smartphone or tablet. - Build in Mirco SD slot.