Presence Grey UC - (replaces art no 504575 + 504576)Mono BT headset for the mobi

-Frequency response (microphone): 150 - 6,800 Hz
-Frequency response (headphones): 150 - 15,000 Hz
-Microphone: Digital MEMS microphone (3 microphones)
-Sound pressure level (SPL): Max. 118dB (SPL) limited by ActiveGard
-Weight: 13g
-Charging time: 1h 20min
-Standby time: 14 days

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