POLY Sync 40 Microsoft Teams Certified Speakerphone. Device type: PC, Product colour: Silver, Cable length: 1.05 m. Microphone frequency: 100 - 7800 Hz. Connectivity technology: Wireless, Bluetooth profiles: A2DP, AVRCP, HFP, HSP, USB connector type: USB Type-A, USB Type-C. Power source type: Battery, Battery technology: Lithium-Ion (Li-Ion), Talk time: 30 h. Sustainability certificates: RoHS, Federal Communications Commission (FCC), CE