Unitech PA600 Mobile 6.1 Phone edition laser 802.11 b/g GSM/GPRS/EGPRS MAIN FEATURES: -Windows Mobile 6.1 Professional Phone Edition -Compact and lightweight ergonomic design -Flash 320MB and SDRAm 128 MB to manage more data -Touch and tackle keypad -Phone buttons green & red -Battery Gas Gauge for precision indication of operation time -SDIO 1.2a supports HCSD up to 4G for extensive data storage -10 °C to 50 °C temperature resistant and IP64 rated