best bluetooth headset?

Dear, it's true that can cause harm, though there has been a great deal of research, the evidence pointing to any health hazard from radiation in the 800 MHz to 2 GHz range at the power levels used by mobile phones is, at worst, equivocal. This suggests that if there is any risk at all, it is very small. I have not seen any studies suggesting any risk from Bluetooth. While a phone needs to transmit with enough power to reach a base station antenna that may be a couple of miles away, Bluetooth has a nominal range of 30 feet.
This is done mainly to preserve battery life rather than because of health concerns, but while idle, the headset radio wakes up only for very brief spurts to let its partner in the phone know that it is still there. It can create problem for ears. Here i suggest u some best headset for you, try it,

1.jawbone era

If you’ve been eyeing the Jawbone family of products for a while, and you expect to conduct calls in environments with background noise, check out the Era.

2.Plantronics M100

Comfortable Bluetooth headset strikes a pleasing balance between performance, design, and price.