‎20 Hours

Make sure this fits by entering your model number. Hear and be heard: Keep the focus on your voice, not the background noise with a multi-microphone steerable array for echo and noise reduction. Let people talk simultaneously for natural conversations without missing a word with full duplex audio. Work on the go: Keep your smartphone charged and ready using your Poly Sync 20, with up to 20 hours of battery life. It’s slim and portable, IP64 dust-and water-resistant, and comes with its own carrying case.