Connecting h700 headset to cellphone - Motorola Mobility H700 Wireless Headset

Your headset will indicate it is in pairing mode when its indicator light is steadily lit in purple. Open the headset boom. If it has never been paired with any bluetooth headset before, it will enter the paring mode right away. If it has been previously paired, make sure the bluetooth radio of that(those) device(s) are turned off, and after some 5 to 10 seconds, you'll see it is in pairing mode.
Now, make your phone's bluetooth application search for new devices. After a while, the H700 will show on screen. Select it and command it to proceed. If a passkey (or PIN, or pairing code) is requested, enter '0000' (four zeros).
By the way, if your headset's user guide happens to be missing, you can download it from this location.
Hope it works for you.
Cheers! Carlos