Description Konftel Extension Microphones (900102113) Increase the voice pickup range from 30 up to 70 m2. Two lengths of cable supplied, 1.5 and 2.5 meters. Color: Licorice black. Wired microphones (pair) compatible with the following: Konftel 250 Konftel 300 Konftel 300ip Konftel 300ipx Konftel 300Wx Konftel 300mx Konftel 55wx Konftel 300m Konftel 55w Konftel C5055wx Konftel C50300hybrid Increases Range Up to 750 Sq. Ft. Includes 2 Cables, 4 Ft. & 8 Ft. Mute button for muting extension mics and base (one button for both) LED mute on/off status indicator 1 year warranty Buy with confidence! The VideoConference Store is an Authorized Konftel Reseller and has been delighting our customers for over 18 years. As a video and voice conferencing expert, The VideoConference Store can design and deliver a solution that integrates with your existing investments, aligns with your business requirements, and fits within your budget. Please chat below, email, or call 1-888-821-7767 with any questions!