1. BiDirectional Transmission: This SD card reader for iPhone and iPad offers versatile features and supports all iPhones and iPads running iOS 13 or above. It includes SD and TF card readers and allows bidirectional transfers between SD card and iPhone or between iPhone/iPad and SD memory card. 2. Plug Play: The SD card reader for iPhone requires no additional drivers or thirdparty apps! It supports SD, SDHC, SDXC, MMC, Micro SD, Micro SDHC, Micro SDXC cards. Just plug in the SD card and connect the SD card adapter to your phone/tablet. After about 5 seconds, you can start transferring or viewing data between the phone and the SD card. 3. Fast Transmission: The SD card reader supports SD cards of digital cameras, action cameras, drones, and outdoor game cameras. The data transfer speed is 20MB/s to 30MB/s, so data, photos, videos, and documents can be quickly transferred from storage medium to mobile phone or tablet, saving a lot of time. 4. Instant Share: Supports photo formats (including JPEG and RAW) as well as SD and HD video formats (including H.264 and MPEG4). Supports memory card capacities up to 1TB. You can transfer photos/videos in a few seconds and share your wonderful moments with friends anytime, anywhere. Please note: Supported SD card capacities are less than 256GB, including 256GB.