Go to the configuration menu.
To restore factory default settings on the SMH10R, tap the (+) Button or the (-) Button until you hear the voice prompt, “Factory reset”. Tap the Center Button to confirm. The SMH10R powers off
with a voice prompt, “Headset reset, goodbye”.
You can also enter the factory reset menu by pressing and holding the (+) Button and the Center Button at the same for 12 seconds. Tap the Center Button to confirm.