Great Used Condition | Unboxed\nListed as Used, But Looks New to Us\nPlease Note: Exclusively for use as add-ons with the Logitech GROUP video conferencing systemWill not function as standalone USB PC microphones\n\nLOGITECHGROUP Expansion Mics (Pair) | 989-000171\n\nExtend the range of the GROUP video conferencing system with Logitech GROUP Expansion Mics. Accommodate up to 20 people in one large room and make sure everyone\u2019s voice can be heard. Simply plug the microphones into the GROUP speakerphone\u2014they are automatically recognized and configured. An indicator light shows when the microphone is muted, when a call is active, and when Bluetooth\u00AE wireless pairing has begun.- Status LEDs: Instant confirmation for video streaming, microphone mute, call-on-hold, and Bluetooth\u00AE pairing- Clear Audio: Built-in noise-cancelling technology paired with a 360-degree omnidirectional pickup pattern- Generous Radius: 2.4m (7.9ft) attached cable length per microp)