Compact wireless transmission system, built-in lithium battery, plug and play, easy to operate. 2.4G uncompressed wireless signal transmission, low noise and latency, Wireless microphone system effective range is about 30 meters. Not only suitable for XLR microphones, but also for guitar audio reception. Guitar Wireless Built-in rechargeable lithium battery, long working hours, and comes with USB cable for convenient recharging. feature: 1]Compact wireless transmission system, built-in lithium battery, plug and play, easy to operate. [2]2.4G uncompressed wireless signal transmission, low noise and latency, Wireless microphone system effective range is about 30 meters. [3] Not only suitable for XLR microphones, but also for guitar audio reception. [4]Guitar Wireless Built-in rechargeable lithium battery, long working hours, and comes with USB cable for convenient recharging. Color: Black Material: ABS+Metal Specification: 1 to 1 Package Contents: 1 set of Wireless microphone mixer adapter 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.