Необходим перевод текста.
BLUETOOTH
These devices can be laptops, PDAs, cellphones, wired telephone access points, even wrist watch devices, headphones, digital cameras, etc.
Bluetooth operates in the unlicensed SM (Industrial, Scientific and Medical) band at 2.45 GHz, which is globally available for products. There’s 89 MHz of bandwidth allocated here, and since Bluetooth is very low power, it actually radiates less than most national and international standards allow non-transmitting devices to leak as part of their normal operation. This is key, as it allows the technology to operate without restriction on aircraft.