... an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a ... slim and compact demandof design. General Features - Quad-Band 850/ 900/ 1800/ 1900 MHz - GPRS multi-slot class 10/8 - GPRS mobile ... phase 2/2+ – Class 4 (2 W @850/ 900 MHz) – Class 1 (1 W @ 1800/1900MHz) - Dimensions: 24* 24 * 3 mm - Weight ...