User Manual BlueParrott 204347 M300-XT Noise Cancelling Hands-Free Mono Bluetooth Headset

The S450-XT has about 80% noise cancellation, 24+ hours of talk time and 500 hours of standby time. The B350-XT also has 24+ hours of talk time and 500 hours of standby time, however, noise-cancellation is about 96%, as it's solely a communication headset.

The Blue Parrott M300-XT has up to 14 hours of battery. Thank you for your question!

You can pair the BlueParrott M300-XT with up to 8 devices and connect to any two at the same time.