Long-lasting battery
With up to 50 hours of music listening time1 or up to 30 hours of voice calling on Microsoft Teams.2
[1] Music: Testing conducted by Microsoft on March 2021 using Microsoft Modern Wireless Headset with firmware update 1.37.129 paired with Surface Pro 3. Playlist consisted of 44 songs transmitted using SBC encoding. Volume was set to 50%. Bluetooth A2DP profile was used. Testing consisted of full Microsoft Modern Wireless Headset battery discharge while playing audio until the Microsoft Modern Wireless Headset disconnected from the host device. Battery life depends on device settings, environment, usage and many other factors.
[2] Voice: Testing conducted by Microsoft on March 2021 using Microsoft Modern Wireless Headset at peak power consumption (mA) conditions on a Microsoft Teams call. These conditions for Microsoft Modern Wireless Headset are when 100% of usage is muted, and both the red and white LEDs are lit at the same time.