Boss WL-30XLR; wireless system; plug-and-play wireless system for a standard dynamic XLR microphone; high audio performance with low latency BOSS wireless technology; frequency range: 20Hz - 20kHz; latency: 2.3ms; dynamic range: 110dB; wireless carrier frequency: 2.4GHz; easy setup with visual support in just two steps; up to 11 hours of runtime with regular AA alkaline batteries; transmission range: up to 70 meters (line-of-sight transmission); reliable wireless performance with 14-channel scan; battery LED to check remaining battery life; light and compact transmitter for comfortable handheld performance; receiver connects to an XLR mic input on a mixer, amplifier, audio interface, etc.; channel lock function; dimensions per unit (W x H x D): 23 x 99 x 27mm; weight per unit: 90g; contains: WL-30XLR transmitter and receiver (microphone not included), user manual and batteries