Small and Portable:The slim and sleek design + keychain design allows the sd card reader to be placed into your pocket,Prevent loss and carry the micro sd card adapter with you. Real-Time Sharing and Data Management: High speed two-way transmission, the sd card reader for iphone suitable for data transmission between iPhone/Android/computer and other devices, providing intelligent file viewing and management functions, browsing documents, pictures, watching videos, listening to music, etc. Compatibility:The sd/micro sd card reader support all iPhone with iOS 8.0 and up and iPads with iOS 8.0 or later/OTG Android phone/computer and other devices with usb port,Maximum support memory card capacity 512GB. Simultaneous Charging & Card Reading: 4-in-1 sd/Micro sd Card Reader adds a charging port,charging and card reading can be operated at the same time,Easy and convenient. 4 in-1 Multi-Interface:The memory card reader has various interfaces,usb/usb c(type c)/micro usb/sd card slot/micro sd card slot and iOS devices charging port for iPhone/iPad ,Easily transfer the file you need between different devices.