Product Name: DJI Mic (2 Transmitters + 1 Receiver + Charging Case) Wireless Lavalier Microphone, 250m Transmission Distance, 15-Hour Battery Life, Noise Reduction, Compatible with PC, iPhone, Interviews, Cameras, Wireless Microphone for YouTube Vlogs ■ Product Condition I purchased this for VLOG shooting, but I only checked the connection and haven't had a chance to use it since. It's in excellent condition. ■ Operation Check I have confirmed that it works properly, so please rest assured. [Integrated Storage, Ready to Use Anytime] - The integrated design makes it easy to carry and use immediately. The two transmitters and one receiver are linked from the start and can be charged and stored in the charging case. [250m Transmission Distance] - The DJI Mic achieves a maximum transmission distance of 250m in an open, unobstructed environment, making it ideal for live streaming, vlogs, and outdoor recording. [15-Hour Battery Life] - The transmitter has a battery life of 5.5 hours, and the receiver has a battery life of 5 hours. When charged in the charging case, it can be used for up to 15 hours, eliminating concerns about battery life. [Magnetic Attachment] - The DJI Mic can be easily and discreetly attached to clothing or anywhere else, allowing for flexible recording, making it very convenient to use. [OLED Touch Screen] - The receiver has a built-in 0.95-inch OLED touch screen, allowing you to check brightness, volume, or battery life information, and intuitively operate the transmitter. [14 Hours of Recording Time] - With 8GB of internal storage, it allows for up to 14 hours of uncompressed 48kHz 24-bit audio recording. Each can be recorded separately, and audio files can be quickly output to a computer via a data cable. Audio Sensitivity: 12 dB Item Weight: 84.9 grams Microphone Waveform Rate: Lavalier Microphone Product Dimensions (L x W x H): 47 x 30 x 20 mm Number of Batteries: 4 Lithium-ion batteries (included) S/N Ratio: 71 dB Hardware Platform: Smartphones, Cameras Number of Channels: 2 Noise Level: 23 dB Manufacturer: DJI Product Model Number: 6941565922595