Bang & Olufsen Earset Headset Wireless In-ear Calls/Music USB Type-C Bluetooth BrownBrown Calls/Music In-ear HeadsetWireless USB connectivity Bluetooth 4.2Intraaural 20 - 20000 Hz 32 Ω 105 dBMicrophone type: In-lineBuilt-in battery Lithium-Ion (Li-Ion) 95 mAh
