POLY Voyager 4320 Wireless Headset [Black], New

POLY Voyager 4320 Wireless Headset [Black]   Battery Performance: Capacity: 560mAh. Type: Lithium-ion. Talk Time: Up to 25 hours (ANC Off, Online indicator Off – requires setting change via Poly Lens/Plantronics Hub). Up to 20 hours (ANC On, Online indicator Off – requires setting change via Poly Lens/Plantronics Hub). Up to 18 hours (ANC Off, Online indicator On – default setting). Listening Time: Up to 40 hours (ANC Off). Up to 24 hours (ANC On). Charge Time: Full charge in 2 hours. Standby Time: Up to 30 days. SoundGuard DIGITAL: G616 support limits the level to 102 dBSPL. Time-weighted average prevents average daily noise exposure from exceeding 85dBA. Requires Poly Lens desktop app to enable SoundGuard DIGITAL feature. Dimensions and Weight: Item Dimensions: 4.33 x 8.27 x 7.09 inches. Item Weight: 1.41 lbs. ...