phone for old with SOS button ,big screen 1.GSM850/900/1800/1900 2.MTK6252 Dual Sim card ... phone for old with SOS button ,big screen specifictaion: FrequencyQuad-bandTypeBar senior phoneScreen2.0 Real wide screen (320*240)PlatformMTK 6252Sim cardDual sim ... big button, loudly voice, SOS button,torch-light; Support MP3,MP4, bluetooth(optional), Camera Promotion phone for old with SOS button ,big screen