Uniden BT359 User Manual page 6

1) Make sure the headset is powered off and the power adapter is not
connected (you can't use the headset while it's charging).
) Press & hold
headset is in pairing mode and should be visible to other Bluetooth
devices.
) On your phone, start a search for Bluetooth headsets or hands-free
devices. (This process may take several seconds, and it will be different
for each mobile phone; see your phone's owner's manual for detailed
instructions.)
) Your phone should discover a device called a BT359 or BT359 headset.
When your phone asks if you want to pair with this device, answer yes.
) When your phone prompts you for a PIN code or password to pair
with the BT9, enter
) When the headset is paired, the LEDs flash twice every  seconds. Your
phone might display a confirmation message, also.
) Your phone might ask if you want to change the headset's name;
generally, you should only change the name if you have more than
one BT9 headset that you use with this phone.

Multi-function
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0000
until the LEDs flash alternately. The