Speedy Dialing,Smart Emergency Calling,Low RF,Puzzle games,Characteristic Picture frame *.GSM900/1800 or GSM850/1900 *.Firewall protection:In the Operating Mode of Children, all strangers' calling & SMS should be Stopped of receiving. *.Air Monitoring: You can air-switch-on it to monitor what they are doing & where to go in case of the phone switched-off. *.Restricted use in Class: A restricted use can be done in the periods of class to avoid interruption; *.Smart Emergence Calling:In case of emergency, the children should press the SOS key to call those nearest 4 numbers pre-set in phone alternately. *.Restriction for calling time:The legal guardians can set a time-limit for children to avoid too long talking & save the money. *.Wallpaper:Child can select their favorite wallpaper and picture frame.