Princeton is moving to the smaller and smaller product with its new PTM-UBT3S Bluetooth 2.0+EDR USB adapter. The adapter measures just 14mm x 19mm x 4.5mm, weighs just 5.5 grams and will happily sync with any of your Bluetooth-enabled peripherals. Princeton notes that the PTM-UBT3S is compatible with Windows 2000, Windows XP, Windows Vista and Mac OS X.

The tiny device will be available in Japan this September for 2,480 yen ($22 USD).

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