The optional microphone for YVC-1000/YVC-1000MS.

Omni-directional tabletop microphoneWired microphone that can be daisy chained to your existing YVC-1000 or YVC-1000MS unit (base units include 1 extension microphone)Up to 5 microphones can be used per unit 
Interface: Input and output terminalsOperating environment: Temperature: 0 - 40° C (32 - 104° F), Humidity: 20 - 85% (no condensation)Dimensions: 136 (W) x 36 (H) x 136 (D) mm (5.35 x 1.42 x 5.35 in)Weight: 0.4 kg (0.9 lbs)Accessories: Microphone cable 5 m, User’s ManualMicrophones: Unidirectional Microphones x 3, 360° coverageFrequency bandwidth: For sound pickup: 100 Hz - 20,000 Hz