... slot2 card slots, 2standbyUSB jackSupport, MicroUSBAudio jackSupport, 3.5mm audio jackCharger Interfacesupport, USB jackBasic Info(Software)OSAndroid OS ... accelerate (OpenGL ES2.0)SupportSupported Graphics formatsJPG, PNG, BMPSupported Audio formatsMP3, MIDI, AAC, AAC+, eAAC+, WMA, PCMSupported ... packing: Charger: 1 Battery: 2 Earphone:1 USB cable:1 3.5 inch Retina, 960x640 ,android 4.0 dual card ...