Mio A501 - Manual (Page 33)

Getting Started
1-17
Using the Earphones
The earphones allow you to talk conveniently using a hands-free solution.
The answer button allows for the following operations:
Press to answer an incoming call.
Press during a call to put the call on hold. Press again to return to the talk
mode.
Press twice quickly during a call to end the call.
When not during a call, press to activate the Voice Speed Dial function.
(See section 8.3 for information on Voice Speed Dial.)
Earphone
Microphone
Answer button
Volume control