Blink 500 B3 & B4 Micro-Wireless Lavalier System w/ Apple Lightning for iOS Devices - B4 - Two Mics

Blink 500 B3
The Saramonic Blink 500 B3 is an incredibly compact, lightweight, and easy-to-use wireless microphone system for Apple iPhone and iPad that provides broadcast-quality sound. The RDX battery-free MFi-certified Lightning receiver is exceptionally lightweight, space efficient, and works perfectly when used in handheld gimbals. The clip-on transmitter has a great-sounding built-in mic and it’s small and light enough to clip to shirts and clothing, or you can use the included SR-M1 professional lavalier microphone. It comes with one dual-channel receiver that plugs into the Lightning port of your device and one transmitter. You can add a second transmitter (sold separately) to put mics on two people.

Blink 500 B4
The Blink 500 B4 is essentially the same as the B3 system with the addition of one more transmitter. It provides two wireless transmitters and two lavalier mics, so you can put mics on two separate people with only a single ultra-compact receiver on your iPhone.