The SPT 1842 replaces the SPT1742. Twice the processor speed 4-8 8-16 memory configurations Improved display Backup battery Voice over GSM worldwide Non-incentive (non-explosive) - US Class 1 Div 2 ABCD.
SPT 1740, 2MB ROM, 8MB RAM, 802.11/1Mbps. Includes high speed scanner, stylus, carry case & lithium ion battery. Order cradle, charging cable, desktop software & documentation separately. See accessories.