【2.4GHz Wireless IEM System】The LEKATO in-ear monitor system MS-20 provides stable, interference-free audio. Professional 24-bit/48KHz HD audio. With a frequency range of 20Hz~20KHz and a signal-to-noise ratio of 100dB, it delivers clear sound ideal for studio-level monitoring. 【OTG Audio Input Supported】Plug and play connection to smartphones and tablets, connect directly via OTG connection, no setup required! Perfect for streaming music and playing backtracks. Features include an automatic pairing function, an easy-to-use wireless IEM system, and a compact clip-on design mini in-ear monitor system. Easily attaches to belts, pockets, guitar straps, etc., allowing for hands-free portability. 【8+ Hours of Battery Life】The LEKATO in-ear monitor MS-20 is for singers. Built-in rechargeable lithium battery allows for over 8 hours of continuous use. Can be used by connecting to your favorite earphones or over-ear monitors. Ideal for band practice, allowing musicians to enjoy the realism on stage without worrying about power. 【One Transmitter to Multiple Receivers】Our wireless IEM monitor system can simultaneously transmit signals from one transmitter to multiple receivers (up to 10 pairs). Quickly press the receiver's power button three times to pair. This professional wireless IEM monitor system is perfect for band monitoring in small/medium-sized stage performances, live shows, rehearsals, etc. 【Extended Wireless Range up to 100 Feet (approx. 30 meters)】Move freely on stage without interruption with a strong and reliable signal. Ideal for live performances, churches, and band rehearsals. Low noise & low latency, achieving real-time audio synchronization for guitarists, vocalists, and drummers (Note: Earphones are not included). 【One-Touch Mono/Stereo Switch】Wireless in-ear monitor system with flexible monitoring modes. Quickly switch between mono and stereo. A short press allows you to switch between instruments, mixers, and studio recordings. A perfect starter set for those who frequently perform live or gig.