... support 800,900 and 1800MHz, NAT Router Function, No Need of Background Computer Features:GPRS Wireless Router Frequency: 800, 900 and 1,800MHzReal ... background computer supportsAutomatically dialing after drop from the netSupports DMZNAT router functionEstablishing LAN with high speed conveniently and fluentlyEasily operatedWakened ... 35mm (not including antenna and fixed parts) GPRS wireless Router