The Boya BY-W4 Wireless Microphone System is a professional-grade wireless audio solution designed for capturing high-quality sound in various recording scenarios. The Boya BY-W4 system consists of a transmitter and a receiver unit that work together to provide wireless audio transmission. The transmitter is typically worn by the speaker or attached to a camera, while the receiver is connected to a recording device, such as a DSLR camera, camcorder, or audio recorder. This wireless system allows for hands-free recording and convenient audio capture in various scenarios, including interviews, presentations, vlogging, and filmmaking. The BY-W4 utilizes UHF (Ultra High Frequency) wireless technology for reliable and interference-free audio transmission. UHF frequencies offer greater range and stability compared to lower frequency bands, ensuring clear and consistent audio signal transmission over longer distances and in challenging RF environments. The BY-W4 system provides a generous operating range, allowing for flexible recording setups and freedom of movement during recording sessions. Depending on environmental conditions and line-of-sight obstructions, the system can typically achieve a range of up to 60 meters (197 feet), providing ample coverage for various recording scenarios. The BY-W4 system includes a clip-on microphone (lavalier microphone) that connects to the transmitter unit. The clip-on design allows the microphone to be discreetly attached to the speaker's clothing, providing hands-free audio capture with clear and natural sound quality. The omnidirectional microphone capsule captures sound from all directions, ensuring accurate and detailed audio reproduction. The receiver unit of the BY-W4 system features a headphone jack for real-time monitoring of audio during recording. This allows the user to monitor the audio levels and quality directly, ensuring that the recording is capturing the desired sound without any issues. Real-time monitoring is essential for achieving professional-quality audio recordings in any environment. The Boya BY-W4 system is designed for simple and intuitive operation, allowing for quick setup and hassle-free recording. The transmitter and receiver units pair automatically upon startup, eliminating the need for manual frequency tuning or configuration. The system is powered by AA batteries, ensuring convenient power options for extended recording sessions in the field. The BY-W4 system offers versatile connectivity options, including TRS and TRRS output cables, allowing for compatibility with a wide range of recording devices, including DSLR cameras, camcorders, smartphones, tablets, and audio recorders. This versatility makes the BY-W4 suitable for various recording setups and applications.