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Manufacturer: Microsoft
Model Name/Number: 1661-2b/RH-121
Technologies and Bands:
(2G)
GSM: 850 MHz   1900 MHz  
Certification DateHardware VersionSoftware Version
2010-01-200302, 0402, 0502, 901305.01
2009-04-290302, 0402, 050203.70
2009-03-190302, 0402, 050203.36
2009-03-040302, 0402, 050203.10
2009-02-260302, 0402, 050203.00
2009-02-170302, 0402, 05022.70

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