The digital bluetooth sunglasses is good for wireless communicationin driving.

Tech parameters of the bluetooth sunglasses:
Function of K02SR01 Bluetooth sunglasses
This eyewear is Bluetooth equipment made with latest technology and can bi connected with mobile, desktop computer, notebook computer, PDA, or other Bluetooth equipments wirelessly within ten meters.
Specifications:
*Operating frequency range: 2.402GHz-2.48GHz
*Bluetooth v1.2 compliant
*Range of wireless connection: 10 meters
*Transmitting power: Glass2
*Supports Headset &Handsfree Profiles
*Headphones with built-in chargeable 150mAH lithium battery
*Talk time: 6 hours; Stand-by time: 150hours
System requirement:
*Windows XP, Windows 2000 or Windows ME. Windows 98SE users must download the USB Mass Storage Device Driver
*USB 2.0 connection port.
Accessories: USB wire, Charger, compact driver disk, instruction book, glasses case