Black Calls/Music/Sport/Everyday Head-band Headset Wired & Wireless 3.5 mm connector Bluetooth 5.1 RF connectivity 12 m Circumaural 20 - 22000 Hz 2495 dB Microphone type: Built-in Built-in battery Lithium-Ion (Li-Ion) 1200 mAh Beocom PortalThe future for business professionalsBeocom Portal delivers crystal clear sound quality whenever & wherever you work.Transform the way you workBang & Olufsen brings our renowned expertise in sound, design and craftmanship to the world of business professionals with Beocom Portal. A headset made for hybrid working with crystal clear sound quality and beautiful sleek design. The natural choice for flexible working.Beocom PortalDesigned for modern hybrid workersFrom behind your office desk or at home, Beocom Portal delivers crystal clear sound whenever & wherever you work.By combining Bang & Olufsen signature sound, quality materials & a seamless intuitive design, the world for business professionals is forever changed. The Beocom Portal headset comb