How to set up and install a voice star vs7...

headset for mobile phones 2.0 compliant to a metropc motorola v7 razor cell phone.i need instruction for the headset due to no instructions manual in package when i purchase bluetooth.need to know how long do charger bluetooth so it can be fully charger? also need to know what color are the led lights for low batery indicator. one color i see is red when headset is plug in wall, another color i notice was a blue light.