Logitech Expansion Mics for GROUP Video Conferencing System Select Warranty:7 Days Replacement Sensitivity (headphone): 111 DBSPL +/-

Sensitivity (headphone): 111 DBSPL +/- 3dB

and the design allows easy access to the phone or tablet home key

External privacy shutter

1x AA Battery (pre-installed)

Logitech Expansion Mics for GROUP Video Conferencing System Select Warranty:7 Days Replacement Sensitivity (headphone): 111 DBSPL +/-Logitech Expansion Mics for GROUP Conferencing system will enable you to accommodate up to 20 people in one large room and make sure everyone's voice can be heard clearly. These are automatically recognized and configured. An indicator light shows when the microphone is muted, when a call is active and when Bluetooth wireless pairing has begun. Accommodates up to 20 people in one large room Superior sound ideally needed in a large room Automatically