Jarv Joggerz Pro Sports BT501 User Manual page 10

Rejecting a Call
Press and hold the Multi-Function button for 2 seconds to
reject the incoming call. You will hear an audible tone and the
call will be rejected.
Ending a Call
Briefly press the Multi-Function button once to end the call
or hang up from your mobile phone.
Redialing a Call
Briefly Press the Multi-Function button twice to redial the
last dialed phone number on your mobile phone.
Voice Transfer
During the call, press and hold the "+" for 2 seconds until
you hear an audible tone. The call will be transferred from
your headphones to your mobile device. You can repeat this
step to transfer the call back to your headphones. This
function can also be initiated by the handset.
Voice Dial
If voice recognition function is enabled on your device, you
can make voice calls by speaking into the microphone.