Wireless In Ear Monitor System provides high-quality wireless monitoring for stage performances and studio recordings. Its lightweight design makes it portable and easy to use. Rechargeable: The wireless earphone mitter is rechargeable and can be used for a long time. you can also use it as a phone charger, which is very convenient. High speed: High speed, low power consumption, long service life, no need to worry about the loss of battery.<br><br>Feature: Small size yet has lossless professional sound quality, low noise, low latency, good resolution. 2.4GHz wireless mission band, 24 bit/48KHz sample rate. 30 meters long distance effective mission distance. One key to switch mono/stereo, meet the needs of your different device. Built-in rechargeable lithium-ion battery that can be conveniently charged by USB. Specifications: Sample rate: 24bit / 48KHz lossless digital mission sound quality Wireless Band: 2.4GHz Delay: Less than 12ms Ran-ge: 30 meters outdoor or 15 meters wall distance Charging Device: USB charging cable Signal-to-noise Ratio: -98dB Dynamic: Greater than 105dB Frequency Response: 20 to 20KHz, +1dB / -3dB color: Black material: plastic<br><br>Package Contents: 1 x mitter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.