POLY 4220 UC Headset Wireless Head-band Office/Call center Bluetooth Black

POLY 4220 UC. Product type: Headset. Connectivity technology: Wireless, Bluetooth. Recommended usage: Office/Call center. Headphone frequency: 20 – 20000 Hz. Wireless range: 1181.1″ (30 m). Weight: 5.29 oz (150 g). Product color: Black