Features : 4.3 inch screen 10000 classic retro games built-in(some are repeated). Stereo music steaming Setting Function: Support setting and reading of various functions and properties. Combine gaming, movie watching, stereo music listening, digital photographs displaying. Specification : Battery :Built-in 3.7V lithium battery (1500 milliampere battery, continuous use 3 ~ 4 hours) Charge time: 4 hours Working temperature: 0-45 degrees S/N Ratio: 90db. Operation Voltage: 3.5-4.2V. Connection port: MINI 5P USB, 3.5mm AUX earphone output/TV output, TF card holder Support: Memory: Built in 8GB, support TF card expansion to 32GB Screen: 4.3 inch, 260,000 full color, high speed TFT screen Support 10 simulators Support 8-bit 16 bit 32 bit 64 bit 128 bit arcade games Support game format: GBA, for NES ,SFC,MD(BIN),GB,GBC,FC,CPS1,CPS2,NEOGEO,SMS(GBA),GG(GBA) Support music format: MP3, WMA ,OGG, WAV, AAC, APE, FLAC Support photo format: JPEG, BMP, GIF, TIF and PNG Support video format: 720HD RM, RMVE, AVI, MP4, 3GP, MPEG, VOB Support record format: FM MIC recording( format MP3 WAV) Support E-book format: TXTe-book reading Support MP3 music, MP4 movie stopwatch Support the AV television output