This product is either discontinued or we cannot get that from suppliers.
Poly Plantronics Voyager 4220 214003-08, Up to 12 hours talk time and 15 hours listen time, Up to 13 days standby time, Blutooth 5.0 with BLE Profiles used A2DP, AVRCP, HFP, HSP, Speaker 20 Hz - 20 kHz, Speaker impedance 32 ohm, Speaker 32mm, 360mAh typical/350mAh minimum, Charge time 1.5 hours for full charge.
The Poly/Plantronics Voyager 4220 Office 2 Way Base MS Teams Headset with USB-A Cable 214003-08 is a 2 way base standard Plantronics bluetooth wireless headset that is ideal for taking calls just about anywhere and optimized.