16GB/80GB MP3/MP4 Player WiFi&Bluetooth with 4 Inch Touch Screen Streaming Music Player Support Spotify Expandable Up To 512GB

16GB/80GB MP3/MP4 Player WiFi&Bluetooth with 4 Inch Touch Screen Streaming Music Player Support Spotify Expandable Up To 512GBSWOFY M503 Pro Digital MP3 Player Product DescriptionSWOFY M503 Pro is a full‑touch smart digital player powered by Android system. Equipped with Wi‑Fi and Bluetooth connectivity, it supports app installation, lossless music playback, video viewing, voice recording and multi‑media reading for daily entertainment. 1. 4‑Inch HD Full‑Touch Display & Gesture Operation4‑inch screen with 480*800 pixels resolution for smooth touch control.Adjustable brightness, night‑light mode, auto‑rotate screen, sleep timeout, font size and custom wallpaper.Support long‑press, slide and drag gestures for home‑screen editing.Screenshot shortcut: Press Power button + Volume‑ button at the same time.Multi‑language system available for global users. 2. Smart System & App Management2GB RAM +16GB ROM internal memory. You can download and install third‑party Android applications.Tip: If APK cannot be installed, please try a lower‑version APK file.Manage apps: uninstall, force‑stop running apps and configure app permissions.Multiple screen‑lock modes: swipe, pattern, PIN, password. Universal unlock password: **for password‑forgotten situation. 3. Wi‑Fi & Bluetooth Wireless ConnectionWi‑Fi: Pull down status bar to open quick setting panel. Connect open or password‑protected Wi‑Fi network for app download and online media streaming.Bluetooth: Auto‑scan and pair with Bluetooth headphones or Bluetooth speakers for wireless audio output. 4. Storage & File TransferTF‑card slot for memory expansion.Connect Windows 7 or above computer via Type‑C USB2.0 cable. Transfer music, video, picture and e‑book files like a flash drive.Check total & available storage space in system storage menu. 5. Multi‑Format Multimedia PlaybackAudio: MP3, OGG, FLAC, AAC, WAV, WMA, APE loss‑free music formats.Video: RM, RMVB, FLV, MP4, DAT, MKV, MPG, MOV, TS video files.Picture: JPEG, BMP, GIF, PNG image browsing.E‑book: Local TXT format e‑book reading.Voice Recording: Built‑in microphone, save recordings as AMR format for meeting, class and voice memo.Hardware ports & keys: Volume+/‑, power key, reset hole, built‑in speaker, 3.5 mm headphone jack, MIC hole, TF‑card slot, Type‑C port.⚙️ 6. Practical System FunctionsBattery manager: intelligent standby power‑saving, battery percentage display, adjustable auto‑sleep and auto‑shutdown timer.Scheduled power‑on & power‑off: set custom time for automatic turn‑on / turn‑off.Sound settings: adjust media volume, notification & alarm volume; toggle lock‑screen sound, charging sound and touch feedback sound.Reset operation: Use reset hole when device freezes or crashes. Please back‑up all personal files before factory reset, all data will be erased permanently. 7. Battery & Safety NoticeBuilt‑in 2000mAh lithium‑ion battery. Please use 5V DC 1A standard charger with official Type‑C charging cable.New battery needs several charge‑discharge cycles for optimal performance. Charge at least once per month for long‑term idle storage to avoid battery damage.Operating temperature: 0‑45°C (32‑113°F).Warning: Do NOT expose the player to extreme temperature, water or long‑time direct sunlight.️ 8. Common TroubleshootingTF‑card not recognized: Format the TF‑card inside the player.App crash / system freeze: Trigger reset hole; backup files before factory reset.For screen‑lock password lost: use universal password 1235789.Specifications TableItemParametersModelM503 ProScreen4‑inch, 480800 pixelsMemory2GB RAM + 16GB ROM, support TF‑card expansionBattery2000mAh, input: 5V DC, 1AInterfaceType‑C USB2.0, 3.5mm headphone jack, TF‑card slot, MIC, built‑in speakerAudio FormatsMP3, OGG, FLAC, AAC, WAV, WMA, APEVideo FormatsRM, RMVB, FLV, MP4, DAT, MKV, MPG, MOV, TSPicture FormatsJPEG, BMP, GIF, PNGE‑book FormatTXTRecording FormatAMRCompatible PC SystemWindows 7 and aboveOperating Temperature0‑45°C (32‑113°F)Package Includes: 1× M503 Pro Digital Player, 1× Type‑C USB Cable, 1× User Manual