True Blue Voice TBV-21 Bluetooth Headset provides clear sound. It is perfect for those who travel a lot and need to speak on the phone a lot. The Bluetooth version is 2.1 and is safe to use this even while you are driving your two-wheeler or your car. When charged you get a talk time of 4-5 hours and standby time of 100 hours. This Bluetooth works in the range of 10 meters. It supports both handset and hands-free.  It very light in weight and weighs less than 23gms, thus it does not harm the ear.