... imager barcode scanner for data collection.5.Built-in magnetic swipe card reader for bill payment.6. 13. ... S50,S79,etc (Optional)AudioStereo audio output, Microphone inputI/O ports1*miniUSB OTG,1*TF, 1*earphone, 1*HDMI ... CARD,1*DCINAccessoriesPower adapter, Instruction, Warranty cardGPSOptionalLed DenotePower DenoteButtonpower button,sound +/-,Capacity buttonSolutionsFree SDK is provided for customers' ...