To use the BOSEbuild Headphones, the battery must be charged using the USB cable provided in the box.
- Plug the small end of the USB cable into the micro-USB connector on the right earcup.
- Plug the other end into a USB wall charger or computer that is powered on.
Note: During charging, the battery light blinks amber. When the battery is fully charged, the battery light glows green.
Allow up to two hours to fully charge the headphones. A full charge powers the headphones for up to 15 hours of music listening, or up to 8 hours of music listening with LED lights.
Listening to music at high volume levels or using the LEDs at full brightness draws battery power more quickly.