1) Either earbud can be used alone for music and calls – take only one earbud out of the case.

2) Keep the other earbud in the case with the lid closed so it keeps charging.

3) Only the touch controls of the earbud being worn will work (e.g., with only the left earbud, single tap is Volume Down; Volume Up must be done from the mobile).

4) When the second earbud is taken out, it joins the connection automatically within a few seconds.

Note: Putting one earbud in and taking it out of the case repeatedly can make the earbuds lose connection in the Noise Audio App, while Bluetooth audio keeps working – refer to Features > “Earbud not connecting in App after repeated in/out (works on Bluetooth)”.