This is standard version, works with all major softphones and programmes, comes with USB-A connection Leatherette ear cushions and lightweight headband Package: Headset, Guide, Carry Case

Plantronics/Poly Calisto 5300-M with USB-C BT600 dongle The Calisto 5300 USB and BT Speakerphone connects to a PC, laptop or Mac via a BT600 USB dongle; to mobile phones or tablets via Bluetooth Standard USB-C dongle conn...