Feature: 1. 【High-quality Wireless In Ear Monitor System】: Our wireless audio transmitter and receiver provide crystal-clear, high-definition sound for professional monitoring in any live performance or studio setting. Designed specifically for monitoring scenarios, our system ensures an immersive and accurate listening experience. 2. 【Seamless Wireless Transmission】: With our rechargeable transmitter and receiver, you can enjoy the freedom of wireless monitoring without compromising on audio quality. The 2.4GHz wireless band offers a stable and interference-free signal transmission, allowing you to move freely up to 90 feet away from the transmitter. 3. 【Versatile and Flexible Connectivity】: Our wireless in ear monitor system supports multiple receivers simultaneously receiving signals from a single transmitter, making it suitable for band rehearsals, live performances, and studio sessions. Whether you're using a mixer, sound card, speaker, guitar amp, or digital sound card, our system can seamlessly connect to a wide range of audio output devices. 4. 【Long Battery Life and Quick Charging】: With a built-in 500mAh rechargeable battery, our transmitter and receiver can provide up to 8 hours of continuous use on a single charge. When it's time to recharge, simply connect them to any USB charging device using the included USB charging cable. No more worrying about running out of power during a performance 5. 【Easy to Use and Low Latency】: Our plug-and-play wireless IEM system ensures a hassle-free setup process. The one-key switch between stereo and mono mode allows you to adapt to different devices and occasions effortlessly. With a delay of less than 8ms, our system guarantees real-time audio transmission and minimal latency, ensuring precise timing and synchronization during performances. Specification: Wireless Band: 2.4GHz Range: 30 meters outdoor or 15 meters wall distance Delay: ≤8ms Signal-to-noise Ratio: -98dB Dynamic Range: >105dB Frequency Response: 20 to 20KHz, +1dB / -3dB Battery Capacity: 3.7V, 500mAh Battery Life: About 8 hours Charging Device: USB charging cable Product Style: Transmitter Receiver Set, Single Receiver (optional) Product Size: 4.5 * 1.8 * 6.3cm/1.8 * 0.7 * 2.5inch Package List: 1 * Transmitter1 * Receiver1 * Wired Earphones1 * Charging Cable1 * Audio Cable1 * 6.35mm Adapter1 * Manual