Specification : Battery :Built-in 3.7V lithium battery (1250 milliampere battery, continuous use 3 ~ 4 hours) Charge time: 1-4 hours Play time: 1-4 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: 5.1 inch, 260,000 full color, high speed TFT screen Support 8 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),PS1 Support music format: MP3, WMA ,OGG, WAV, AAC, APE, FLAC Support photo format: JPEG, BMP, GIF, TIF and PNG Support video format: RM, RMVB, AVI, MP4, 3GP Support record format: FM MIC recording( format MP3 WAV) Support E-book format: TXT e-book reading Support MP3 music, MP4 movie stopwatch Support the AV television output Support image browsing and interface display Support USB 2.0 high speed transmission Support multi-task operation Support file navigation function Sound mode: natural, pop, classical, jazz, rock, soft, heavy bass and other sound patterns Other function: E-book, Calculator, Clock function, Calendar, Voice recorder Suitable for: child and adult from 6 to 50 years old Package Include： 1 x Game Console 1 x Earphone 1 x USB Data cable 1 x User manual 1 x Retail box NOTE Power Adapter is no included Please contact us first if you had any problems!!! Please contact us if you want the game list or the Electronic Instruction