The Bluetrek Bizz Bluetooth headset is the world’s first Bluetooth headset with integrated SD Card reader.
Bluetrek managed to combine a nice looking Bluetooth headset and a Micro-SD USB-card reader. If you remove the back-end of the headset, a micro-SD slot will show, allowing you to insert an SD-Card up to 8 GB.
See the video here.

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From www.i4u.com