InfoComm 2019: Sennheiser Showcases SP 30 Speakerphone with Bluetooth and USB-C June 19, 2019 | Home / June 19, 2019 rave-video / InfoComm 2019: Sennheiser Showcases SP 30 Speakerphone with Bluetooth and USB-C InfoComm 2019: Sennheiser Showcases SP 30 Speakerphone with Bluetooth and USB-C