1. Turn your Bose QC25 headphones on.

2. Plug the CM2502 Noise Cancelling Mic into the 2.5mm jack on your Bose QC25

headphones. Bluetooth will be disabled.

3. Plug the 3.5mm end of the CM2505 into your device’s headphone jack.*

*You will need a compatible adapter depending on your device; lightning, USB, or USB-C