4-Bluetooth headset-purchase, you need to ensure that it is within the scope of the free Exchange provides wire, generally ranges from about 30 feet, which is about 10 meters. Try and Bluetooth are two blocking and communication distance.
5-availability-equipped with Bluetooth, and voice recognition system. This can help a lot when you really can not use the telephone or receive, especially when you’re driving in your hands. This is also called the voice activation feature.
6-price-$ 20-$ 200 price fluctuations on Bluetooth. Bluetooth technology is the high prices often high-end equipment, but an excellent signal quality, you can purchase Bluetooth at 60-120.
7-battery life-a normal Bluetooth accessories complaints is the life of the battery, an excellent hands-free Bluetooth should provide at least 8 talk time and 100 hours of standby time, please consider charging time to full charge.
8-compatibility-Bluetooth should be equipped with at least Bluetooth 1.1 technology alongside 1.2, this is a great popularity, this version reduced through increased security select jump high-frequency radio frequency interference. The latest version is 2.0, with faster transfer speeds and low battery consumption.
9-warranty-Bluetooth device should have at least 10 months warranty. Bluetooth technology is evolving, you need to ensure that the purchase is a good buy and broad matching Bluetooth-enabled devices.