T-531B
ITC T-531B Wireless Microphone (Single channel wireless microphone with UHF band LCD display), one Lavalier Mic, Frequency Range: UHF 640-857MHz (Two bands total), Modulation: Broadband FM, Adjustable range: 25MHz, Channel Number: 600, Channel Spacing: 250KHz, Frequency Stability: Within ±0.005%, Dynamic Range: 100dB, Maximum Deviation: ±45KHz, Frequency Response: 60-18KHz (±3dB), Comprehensive SNR: >115dB, THD: ≤0.5%.