Need help on bluetooth batteries

Need help on bluetooth batteries
Hello
At present I have a motorcycle contact system to connect to the cell phone via Bluetooth to be able to receive any phone calls while I am on the road. the first time i turn on Bluetooth and sync them with the system, first enter the code, here the unit needs to watch 4 zeros. From the ones I know a phone number can use 1234 just like their code? And this certainly will not work with my internal communication system.
How do droids work?

hope that i can...

Need help on bluetooth batteries

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