The Wireless Lavalier Microphones for iPhone and iPad come with 2 transmitters and 1 receiver, allowing for dual sound recording. It features plug and play functionality with no need for an app or Bluetooth. The microphone has intelligent noise reduction technology and uses 2.4GHz wireless transmission for stable connectivity up to 65ft. It can be used while charging and provides 7 hours of battery life. The package includes 2 microphones, 1 receiver, charging cables, and a user manual. The microphone is suitable for various recording scenarios and offers high-quality sound reception.