... Music play mp3 at background,support equalizer,bluetooth stereo Video 3GP,MP4,AVI,play in full screen,auto horizontal ... black Screen color number 260 thousandResolution 240×400px Screen size 3.2 inches Package weight 0.65 COOLN900 Basic functionsOptional ... directory 2000groups,incoming ringtone,caller group,incoming call with photo/video,background sound SMS/MMS 50 messages,firewall,MMS Power ...