100% new never used In factory box the WP-4 Wireless System. The WP-4 is designed for guitar wireless connection. We have tried our best to provide you a high sound quality 24 bit (48KHz) , low latency 12ms), and long transmission distance(100 feet) wireless system. We hope that you will enjoy using it. Technical Specifications Operating Band: 2.4GHz 1100 mAh rechargeable battery Up to 5 systems(channels) can be used at same time 6 hours continuous use per charge Sample range: 24bit/48KHz Latency: 5ms Range: THD+ Noise: -98dB Dynamic Range: 105dB A weighted Frequency response: 20—20KHz 270°rotating head, fit for most kind of instrument