The Saramonic Blink 500 B3 is an incredibly compact, lightweight, and professional sounding wireless microphone systems for the Apple iPhone and iPad. The included clip-on transmitter is small enough to clip directly to your shirt collar, and the included RXDi MFi Certified Lighting dual-channel receiver is so lightweight and unobtrusive that it won't get in your way at all. It can easily be used on devices that are mounted in handheld gimbals, and the receiver is even capable of accepting the signal from two microphones if you add another Blink 500 TX transmitter (sold separately). Tiny body, huge sound. The Blink 500 B3 is impossibly compact and lightweight, yet it delivers crystal-clear professional sound quality. The versatile transmitter features an excellent sounding built-in microphone that captures voices perfectly. Small enough to clip to a shirt or slide into a pocket and versatile enough to set on a table or podium, or even used handheld. It also operates as a traditional bodypack transmitter with the included SR-M1 professional omnidirectional clip-on lavalier microphone, providing an even more professional and visually discreet miking solution. The sleek, featherweight RXDi receiver plugs directly into the Lightning port of your Apple device and doesn't require any batteries or charging to operate. There are no controls to fuss with, either. You just plug it in, and it works. So advanced, it's effortless. Some wireless microphone systems are complicated to operate and require detailed knowledge of their menus and settings, but the Blink 500 B3 is so technically advanced that it couldn't be easier to use. Even though there are no controls to adjust, behind the scenes the Blink 500 is doing a lot to ensure excellent performance. It operates on the interference-free 2.4GHz spectrum, and automatically hops channels to avoid static noise and audio dropouts.