Bluetooth Headset Setup on your Mobile: 
So, now, I got this Motorola H350 Bluetooth headset, the description for which says it can handle up to 10 hours of talk time or 200 hours of standby time from a single charge.
It works(the light glows :-p). I switch the Bluetooth headset on and go into my cell phone's Bluetooth Menu (Should be there in the Settings Option of any phone). Then I search for devices but :-(, the headset doesn't appear in that list. I kept doing that search for more than 3 times and nothing happens. That is why you got to read THAT manual.
Anyway, to make the headset 'visible' so that your phone can see it, with the headset off, press and hold the talk button until you see a solid blue light (about 8 seconds). like the one below.
Now, get into your phone, turn the bluetooth ON and search for devices. The headset will appear on your list. Select the headset and it asks/prompts for a code/password. Enter 0000 (4 zeros).
The headset is now operational.