Bluetooth is a wireless technology used for communication between different devices such as cell phones, computers and entertainment systems and other remote access instruments.Bluetooth wireless technology allows radiofrequency devices to form connections for communicating one-on-one or for creating a personal wireless network within an approximately 30-feet-radius sphere. Bluetooth devices are used in a growing number of commercial and personal applications; the Bluetooth Specialist Interest Group, an industry trade association, lists over 6000 products that utilize Bluetooth technology.Bluetooth transmitters operate at frequency around 2.4 GHz. Bluetooth devices are assigned to one of three power classes: 1, 2 and 3. Class 2 transmitters – most commonly found in mobile devices – have a range of 30 feet (10 meters) and operate at 2.5 mW peak transmission power; class 3 devices are weaker than class 2, operating at peak transmission power of 1 mW in a range of less than 10 meters. Class 1 transmitters are the most powerful, with a range of 300 feet and peak transmission power of 100 mW. Class 1 Bluetooth devices can cause exposure to radiation similar to that emitted by a cell phone if they are operated in the immediate vicinity of the body.
While the radiations emitted from Bluetooth headset are within the specified SAR level, the transmission strength from the phone is quite high. Bluetooth headset users frequently keep their phone in a pocket or clipped to the belt, a position that leads to radiation exposure of internal organs (Whittow 2008). As stated on the FCC website, “if the phone is mounted against the waist or other part of the body during use, then that part of the body will absorb RF energy” (FCC 2008). While the health effects of this exposure have not yet been assessed, the Swiss FOPH recommended that “cell phones should not be carried in a front trouser pocket when making calls”
As wired earphones dont emit raditions, it is strictly advised to make use of wired earphones / headsets while talking on phone and place "Waveban Cellphone radiation Shield" behind your cell phone in pocket, so that the radiations emitted from the cell phone dont enter your body even while talking.
More Information is Available at www.waveban.in & www.waveban.org
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