The Ploy Voyager 4320 UC Wireless Headset with Charge Stand features wideband (voice), hi-fi stereo, A 2 D P, D S P, active noise cancellation, A battery 350 mAH is the capacity. Type of Battery: Lithium Ion Duration of Listening: Up to 47 hours* It takes 1.6 hours to fully charge. Fast Charge: After 15 minutes of charging, you can listen for up to 10 hours. Time on standby: up to 50 days* Dynamic EQ optimized for multimedia (20 Hz to 20 kHz) or PC wideband voice telephony up to 7 kHz - Bluetooth v5.2 - Use the 1.5-meter (5-foot) USB-C cable that comes with the device to connect to your PC in USB mode for audio Over-the-head (stereo) Voyager 4320: 162 g/.35 lbs, 1 year warranty