1.Wide application-car audio player&camera&amplifier&trolley sound machine&smartphone&sound equipment&subwoofer machine&live sound card(micro) 2.Plug and play, no APP is needed- the innovative Lavalier Microphone is diffent from others, which includes transmitter and receriver, they will atutomatically connect, so APP and Bluetooth are not required. Just plug the transmitter into the devices and play it directly. 3.Real-time Crystal Voice Syncs without any delay- Using real-time auto-sync technology, which extremely reduce the video post-editing. Support Multi-Channel Real-Time Mixing, it can synchronize the background music for phone and human voice in real time. 4.Live Stream- the microphone can be used directly Live stream, conventional Bluetooth ones fail to realize. 5.Superior Performance you can rely on: The wireless mic offers professional full band audio 44.1~48kHz stereo CD quality, more than 6 times the frequency of conventional mono microphones. Real-Time Auto-Sync Technology, reduce the video post-editing. Support Multi-Channel Real-Time Mixing, it can synchronize the background music for phone and human voice in real time. 6.Some modles support to charge your device when connected by charging cable(type C 2 in 1,lightning 2 in 1 also) 7.You can connect earphone on type C interface to input voice and get voice Model: TYPE-C interface charging model/Lightning interface/single mic Type-C+Lightning interface/dual mic Type-C+Lightning interface packet: 1set