... Music.3). Compatible Flash Memory Cards: SD Card Slot, USB Port, MMC and MS Card Slot4). Build-in Stereo Speaker: 2pcs x ... .11). User Can adjust the contrast, width viewing angle, definition and Colorfull of LCD Panel.12). Installation method: Back Standing fixing ... Pcs User Manual+One Pcs Remote Controller+One Pcs Adaptor (USB Cable is Optional).14). Applicable Field: Supermarket, Airport, Lift, ...