Desktop microphone 360° adjustable base with USB plug for a conference call or voice recording with a frequency of 100 - 16 kHz Noise-canceling, great for online meetings, online chatting,...

S/N Ratio 0 dB = 1 mV/Pa 1 kHz Sensitivity 70 dB ±3 dB Frequency 60Hz ~ 13kHz

Professional 4-channel DJ Mixing Console, Monitor and Effects Processor with a Sound Card Compact and Lightweight can be Directly connected to your PC's USB Port Power Supply, No additional Power...

Wireless handheld Microphone UHF Frequency range 730 - 760 MHz Efficient distance about 30-50m Stability: ± 0.001% S/N: >105dB Mini Receiver included