Specification :

Professional USB modem distributor in Asia! We are the expert USB MODEM Distributor in HongKong, Asia, offering Original, Brand New HUAWEI, ZTE USB modems to more than 100 countries and areas.
Good quality, fast delivery, we are the reliable 3G partner that you are looking for!

Sierra 306 Specifications:

HSDPA/ HSUPA/ UMTS/ WCDMA 850/ 1900/ 2100 MHz .
EDGE/ GPRS/ GSM 850/ 900/ 1800/ 1900 MHz .
Wireless download speed up to 21 Mbps and upload up to 5.76 Mbps .
Windows 7, Windows Vista, Windows XP, Mac OS X .
Supports video, graphic and other high speed applications
Easy installation .
Dimensions: 65 mm ( L) x 25 mm ( W) x 13.5 mm ( H) .
Weight 30 g.

Experience blistering fast download speeds with the new Sierra Wireless USB 306 and USB 307 wireless modems. The USB 307 is designed for European customers, whereas the USB 306 is targeting all the other markets worldwide but owners of either will enjoy top speeds up to 21 Mbps download and up to 5.76 Mbps upload - the fastest speeds available in the world today.