• Two-way transmission: allows data transfer between SD card and iPhone/iPad devices. • Plug and Play: no additional apps needed, uses the built-in Files app in iOS. • 3 in 1 high speed: memory card reading and simultaneous charging with high transfer speed. • Dual-use RAW files: compatible with multiple card formats and photo and video formats such as JPEG, RAW, 4K, H.264, and MPEG-4. • Wide compatibility: works with iOS 9.2 or later on various iPhone and iPad models.