model bc-800 specification [lcd display] wide lcd with blue color backlight [technology] 2g - cdmaone [air interface] is - 95a/b [frequency rate] rx freq.:869.64 ~ 893.37mhz tx freq.:824.64 ~ 849.37mhz [enviroment] operation: -10 ~ 50c storage: -20 ~ 70c [talk time] 120min* [standby time] 24 hrs* enhanced features - data service - windows ui(user interface), graphic animation - short messaging service(sms)/voice messaging service(vms) - pc-fax(is-707a,4) - multi-function phone book(up to 2400 phone number entries& 100 sms) - 3-way calling - keypad-tone, message-tone, power on/off tone - personal information management(calendar, to do list, world time, calculator, currency exchange and multiple alarms)