The Saramonic Blink 500 RXDi is an incredibly compact, lightweight, and professional sounding wireless dual receiver that was made for the Apple iPhone and iPad. It's so lightweight and unobtrusive that it can easily be used in handheld gimbals and can handle up to two separate Blink 500 TX wireless transmitters (sold separately). The RXDi makes using multiple wireless microphones with Apple devices as easy as possible. It connects directly to the Lightning port, and no batteries or charging is required. The RXDi provides broadcast-quality sound in an incredibly compact and lightweight package.