Introduction
Thanks for your purchase! This manual provides detailed instructions for operating your Oilsky D22 MP3 Player. Please read it carefully to ensure proper use and to fully enjoy its features.
A PDF version of this user manual is available for download: User manual (PDF).
Product Overview
Device Layout and Buttons

The player is equipped with the following buttons and ports:
- Power ON/OFF: Located on the side. Long press for 3 seconds to turn on/off.
- TF Card Slot: Located on the side for memory expansion.
- Type C USB: Located at the bottom for charging and data transfer.
- Headphone Jack: 3.5mm port located at the bottom.
- Reset Hole: Small hole at the bottom for device reset.
- Speaker: Located at the top of the device.
- Touch Keys (Front Panel):
- Return: Navigates back to the previous screen.
- Menu / Lock/Unlock: Long press to lock/unlock the screen.
- Confirm / Play/Pause: Confirms selections or plays/pauses media.
- Volume + / Previous Track / Previous Folder / Previous Ebook Page: Multi-functional button.
- Volume - / Next Track / Next Folder / Next Ebook Page: Multi-functional button.
- Previous Track / Brightness - / Previous FM Station / Previous Photo: Multi-functional button.
- Next Track / Brightness + / Next FM Station / Next Photo: Multi-functional button.
Setup
Charging the Player
Your MP3 player can be charged using two methods:
- Using a 5V=1A Charger: Plug one end of the USB cable into the USB port of a 5V=1A charger, and the other end into the Type C port on your device. Once fully charged, disconnect the cable by pulling it straight outward.
- Charging by Computer: Connect the device to a running computer via the included USB cable.
Note: To prevent battery deterioration, it is recommended to charge the battery at least once a year.
Memory Expansion
The Oilsky D22 MP3 Player supports memory expansion up to 128GB via a TF (Micro SD) card. Insert the card into the TF Card Slot on the side of the device.

Data Transfer
To transfer files to your MP3 player:
- Connect your device to a computer using the supplied USB cable.
- The player will appear as a removable disk (like a flash drive). You can drag and drop media files directly.
- Alternatively, use music management software (e.g., Windows Media Player) to transfer files. (Note: This device does not work with iTunes).
Attention:
- Only 4000 music tracks can be displayed in the music lists. To access all tracks, navigate through the folders.
- If your computer does not detect the MP3 Player, please update your USB driver or try using a different USB cable.
Operating Instructions
Basic Operation
- Power On/Off: Long press the power button for 3 seconds.
- Reset: If the unit becomes unresponsive, long press the power button for 15 seconds to reset it.
- Touch Control: Tap the touch-sensitive keys on the front panel to navigate and control the player.
- Lock Screen: Long press the designated button to lock the screen, preventing accidental touches. Long press it again to unlock.
Music Playback
The Oilsky D22 supports various music formats including MP3, WAV, FLAC, APE, and OGG.

From the main menu, select 'Music' to access:
- All songs, Resume, Now Playing/Last Played, Artists, Albums, Genres, Playlists, Update playlist, Card Folder (if a memory card is inserted), Local Folder.
When a song is playing, tap the top-left button to access the sub-menu with options such as:
- Repeat: Off, Repeat 1, Repeat All.
- Shuffle: Play songs in random order.
- Repeat Settings: Configure repeat times and interval.
- Sound Settings: Adjust Equalizer (Off, Rock, Funk, Hip Hop, Classical, Techno, Custom), Variable speed playback (-8 to 8 Rates), and Volume limit (Max. 31).
- Playlists: Add to or remove from playlists.
- Bookmarks: Add, go to, or delete bookmarks.
Bluetooth Connection
The D22 features Bluetooth 5.0 for wireless audio streaming.

To pair with Bluetooth devices:
- Navigate to: Bluetooth > Bluetooth on/off > Bluetooth on to activate Bluetooth mode.
- Select Search for Device to find available Bluetooth devices nearby.
- From the Device list, choose the Bluetooth device you wish to pair and press the confirm button.
- Once connected, a green Bluetooth icon will appear on the screen.
Attention:
- The D22 cannot pair with smartphones.
- If you turned off the MP3 Player, you must select Bluetooth again to reconnect with your Bluetooth device.
- If your Bluetooth earphones are connected to a mobile phone, disconnect them before attempting to pair with the D22, or the connection may fail.
- When listening to FM radio via Bluetooth, wired headphones are required to act as the radio antenna.
FM Radio
Reminder: You must connect earphones to the 3.5mm jack to use them as a radio antenna!
In the FM Radio menu, you will find options for:
- Presets: Manage saved stations.
- Manual Tune: Manually search for FM stations.
- Auto Tune: Automatically search and update stations.
- FM Recording: Record FM broadcasts. Recordings can be saved to the Local Folder or Card Folder.
Voice Recorder
The player supports voice recording and line-in recording.

Recording options include:
- Start voice recording: Initiate a new recording.
- Recordings library: Access saved recordings from Local Folder or Card Folder.
- Storage: Choose to save recordings to Internal memory or External memory.
- Record from: Select Microphone for voice recording or Line in for external audio sources.
- Record format: Choose between MP3 or WAV.
- Set REC bitrate: Options include 512kbps, 768kbps, 1024kbps, and 1536kbps. Higher bitrates result in better sound quality.
How to record from Line-in:
- Connect the MP3 player to a smartphone or other audio device using a 3.5mm AUX cable.
- Select Recordings > Record from > Line in.
- Press the back button, then select Start voice recording.
- After saving the file, you can play it from the Recordings library.
E-book Reader
The E-book reader supports ONLY TXT files.
To navigate, tap the appropriate buttons to go to the previous or next page.
When reading an E-book, tap the menu button to access a sub-menu with options:
- Last played, Autoplay settings (set page turn frequency from 2 to 30 seconds), Delete e-book, Select bookmark, Delete bookmark, Add bookmark, Page select.
Photo Viewer
The player supports photo viewing for images in JPG and BMP formats ONLY.
Folder View
The MP3 and SD card memory content will be sorted by edit time, with the most recently added file appearing at the top. If you rename a file or make other modifications, the file will move to the bottom of the list. This sorting method applies only to the "Folder" view, not the "Music" view.
Remember to add a bookmark when using audio books for easier navigation.
Settings
Access the 'Settings' menu to configure various aspects of your player:
- Language: Select your preferred language.
- Brightness: Adjust screen brightness (0-11).
- Display settings:
- Backlight timer: Set the backlight duration (10, 20, 30 seconds, or Always on).
- Screensaver: Choose None or Digital clock.
- Button Light: Turn button backlighting OFF, ON, or Always on.
- Speaker switch: Turn the built-in speaker On or Off.
- Sleep timer: Set a timer (1-99 Minutes) for the device to auto-shutdown, regardless of operation.
- Power management: Set a timer (1-99 Minutes) for the device to auto-shutdown when no music is playing or no operations are performed.
- Date and time:
- Set time format: Choose 12-hours or 24-hours.
- Set date format: Choose DD MM YYYY, MM DD YYYY, or YYYY MM DD.
- Set date: Manually adjust the date.
- Information: View player information and disk space.
- Format Device: Format internal memory or format the SD card.
- Factory settings: Reset the device to its original factory settings.
Specifications
| Feature | Specification |
|---|---|
| Display Screen | 1.77 inch TFT |
| Display Resolution | 128*128 pixels |
| External Memory | Max. 128GB (TF Card) |
| Bluetooth | 5.0 |
| Audio Format Support | MP3, WAV, FLAC, APE, OGG |
| Record Format | MP3, WAV |
| Picture Format | BMP, JPEG |
| Record Bit Rate | 512Kbps, 768Kbps, 1024Kbps, 1536Kbps |
| Battery | 300 mAh |
| USB Socket | Type C |
| Earphone Jack | 3.5mm |
| Product Dimensions | 92mm*41mm*10mm |
| Body Material | Metal |
| Built-in Speaker | Yes |
| WIFI | No |
| Certification | CE, FCC |
Troubleshooting
- Player not detected by computer: Ensure the USB cable is properly connected. Try updating your computer's USB drivers or using a different USB cable.
- Bluetooth pairing issues: The D22 cannot pair with smartphones. Ensure your Bluetooth earphones are disconnected from other devices (like a mobile phone) before attempting to pair with the D22. If listening to FM radio via Bluetooth, wired headphones must be connected to act as an antenna.
- Only 4000 music tracks visible in lists: This is a display limitation. All your tracks are still on the device. Navigate to the 'Folder' view to access all your music files.
- Device unresponsive: Perform a hard reset by long-pressing the power button for 15 seconds.
User Tips
- The player has built-in speakers, allowing you to listen to music without headphones for convenience.
- When transferring music, treat the device like a standard USB flash drive. If you encounter issues, try updating your computer's USB drivers or using a different USB cable.
Warranty and Support
For any after-sales service or technical support, please contact:
- Email: oilskyservice@hotmail.com
Manufacturer: Shenzhen Yunchuang Century Technology Co.,Ltd.
EU Responsible Person:
- SUCCESS COURIER SL
- CALLE RIO TORMES NUM. 1, PLANTA 1, DERECHA, OFICINA 3, Fuenlabrada, Madrid, 28947 Spain
- Email: successservice2@hotmail.com
UK Responsible Person:
- EVATOST CONSULTING LTD
- Office 101 32 Threadneedle Street, London, United Kingdom, EC2R 8AY
- Email: contact@evatost.com
Compliance Information
This device complies with CE and FCC standards.
Waste Electrical and Electronic Equipment (WEEE) Directive:
This symbol indicates that this product should not be disposed of with other household waste. It should be handed over to an applicable collection point for the recycling of electrical and electronic equipment. Proper disposal helps prevent potential negative consequences for the environment and human health.