2.4" big speaker big battery dual card GSM bar mobile phone stereophone,40 big speaker , Class K audio power amplifier dimension115mm*50mm*15mmtypedual SIM ... function)bluetoothsupportringtone64polyohonic ringtone, support MP3 ringtoneflash lightsupportsoundstereophone,40 big speaker , Class K audio power amplifierearphone portsupportkeyboard lightblue colorfunction keyfour keys(left,right ...