I purchased this on Amazon. It's a wireless lavalier microphone. I only tested it, but the sound quality is quite good, and it picked up sound very precisely. The main unit, adapter, instruction manual, and cover are all included. ↓Product Description↓ This wireless lavalier microphone automatically connects the receiver and microphone when powered on, allowing you to immediately record conversations. The lavalier microphone (including clip) weighs only 14g, making it convenient for interviews on the go, remote recording, and long-term carrying. It also meets the needs of frequent use in Vlog shooting and outdoor work due to its portability. 360° omnidirectional sound collection effectively reduces surrounding noise. It comes with a microphone windscreen to prevent wind noise, making the recorded content clear and immersive. Equipped with a noise-canceling chip. Even in noisy environments or with indoor environmental noise interference, the lavalier microphone effectively removes background noise and clearly records human voices. It is ideal for video creators and teleconference users who require clear audio. This lavalier microphone supports a high-quality 48kHz/24bit audio format, reproducing subtle nuances of sound. With a 70dB S/N ratio, it effectively removes background noise. This compact lavalier microphone achieves wireless transmission of up to 50M within an unobstructed line of sight, enabling stable and clear audio recording. It is ideal for video shooting that requires high mobility. This wireless lavalier microphone is equipped with automatic synchronization technology, so you don't have to worry about signal interruption or screen delay even 50M away. You can enjoy complete remote operation by transmitting clear audio to your smartphone through the lavalier microphone receiver. This lavalier microphone is equipped with a high-quality battery, allowing for up to 8 hours of continuous recording on a single charge. By using it with the charging case, a total of 24 hours of use time is achieved, and each charge takes only 1 hour.