The GSM/GPRS/EDGE Quad-band module is a GSM 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 GSM/GPRS/EDGE Quad-band radio and a SIM card. The GSM/GPRS/EDGE kit includes the expansion board with GSM/GPRS Radio, RS232 end-cap, and mechanical stop. Supports data and voice. Compatible with G2 and 3 units only. WiFi compatible.