The UMTS module is a radio expansion-module mounted on a user installable daughter board that interfaces easily with the 100-Pin connector located inside the Workabout Pro accessed through the back cover plate. The expansion module accommodates a UMTS radioand a SIM card. The UMTS kit includes the expansion board with the UMTS Radio, endcap, and mechanical stop. Supports data and voice. Compatible with G1 units only.WiFi compatible. This one is US only.