I am selling this item because I purchased it on Amazon but never had a chance to use it, and it has been stored unused. * I took it out for the first time to take these photos. [From the Amazon listing] In-Ear Monitor Wireless System Transmitter and Belt Pack Receiver Automatic Pairing Wireless IEM System for Studio/Band Rehearsal/Live Performance (Transmitter + Receiver Green) Features: Low Latency Brand: LEKATO Connectivity Technology: Wired, Wireless Color: Green Connector Type: Wireless Rechargeable Battery Included [High-Quality Sound] Delivers studio-quality audio, providing clear and rich tones. It excels in reproducing high and low frequencies, ensuring professional sound quality even during live performances and recordings. This allows for smooth musical communication with the audience and other musicians. [Wide Transmission Range] With a communication range of up to 25 meters, and even further in environments without obstacles, it can be used with confidence on large stages and in spacious rehearsal rooms. This allows artists to move freely and focus on their performance. [Low Latency Technology] Audio delay is less than 12 milliseconds, enabling real-time feedback. This allows for accurate timing during performances without feeling any delay. It provides a stress-free experience, especially in music production and live performances. [Multiple Connection Function] One transmitter can connect to multiple receivers simultaneously. This allows band members and other performers to share audio, improving convenience for group performances and sessions. [Mono and Stereo Function & Rechargeable Battery] You can switch between mono and stereo modes with a single button, accommodating various usage scenarios. Furthermore, the built-in rechargeable battery allows for up to 5 hours of use on a full charge. This allows for worry-free use even during long performances.