1. Úvod
The Syitren R400 is a retro-styled portable CD player designed for high-quality audio playback. It supports both wired and wireless (Bluetooth) connections to external audio devices such as headphones or speakers. Please note that the R400 CD player does NE have a built-in speaker and requires an external audio output device for sound.
Key features of the R400 include:
- Rounded contour design for an intuitive and comfortable feel.
- Dual-material construction for a premium texture.
- Refreshing color schemes.
- Customized pure CD movement (M93BG6DECK) with SC6137D decoding chip.
- Three cycle playback modes: list loop, single loop, and random playback.
- Integrated sinking charging compartment and wire groove to prevent charging head bending.
- Optional accessory protective shell and stand for enhanced playability.
- Anti-slip raised design on the bottom to prevent scratches.
- Classic 3.5mm AUX output interface for wired connections.
- Bluetooth 5.3 for seamless wireless connection to various audio devices.
2. Obsah balení
Upon unpacking your Syitren R400, please ensure all the following items are present:
- 1 x Balící krabice
- 1 x R400 CD Player Unit
- 1 x Demo Disc
- 1 x Specifikační manuál
- 1 x Wrapping Paper
- 1 x nabíjecí kabel
Depending on your purchase option, additional accessories may include:
- N100 Bluetooth Speaker
- R400 Protective Case
- R400 Stand

3. Konec produktuview
3.1. Ovládací prvky a rozhraní
Familiarize yourself with the buttons and ports on your R400 CD player:

- Previous Track / Fast Rewind: Short press for previous track, long press for fast rewind.
- Next Track / Fast Forward: Short press for next track, long press for fast forward.
- Stop: Zastaví přehrávání.
- Zvýšit hlasitost: Zvyšuje hlasitost.
- Snížit hlasitost: Snižuje hlasitost.
- Přehrát/pozastavit: Toggles playback.
- Loop Mode Switch: Cycles through Loop All, Single Loop, and Random Play modes.
- Kontrolka stavu: Displays the current operational status.
- Vypínač: Zapíná/vypíná zařízení.
- AUX Output Interface: 3.5mm jack for wired audio output.
- Output Mode Switch / Bluetooth Reset: Short press to switch output mode (e.g., between wired and Bluetooth), long press to reset Bluetooth connection.
- Kontrolka napájení: Indikuje stav napájení.
- Nabíjecí rozhraní: USB-C port pro nabíjení.

4. Nastavení
4.1. Nabíjení zařízení
Before first use, fully charge your R400 CD player. Connect the provided charging cable to the charging interface (13) on the device and a suitable USB power adapter (DC 5V/2A recommended). The sinking charging compartment and wire groove design help prevent damage to the charging head.


4.2. Optional Protective Case and Stand Installation
If you have purchased the optional protective case and stand, you can install them for added protection and versatile placement. Follow the diagrams below for installation:

5. Návod k obsluze
5.1. Zapnutí/vypnutí
To power on the device, slide the Power Switch (9) to the 'On' position. The Power Indicator Light (12) will illuminate. To power off, slide the switch to the 'Off' position.
5.2. Přehrávání CD
- Otevřete kryt přihrádky na CD.
- Carefully place a CD (CD/CD-R/CD-RW format) onto the spindle, ensuring it is seated correctly.
- Zavřete kryt prostoru pro CD.
- Stisknutím tlačítka Přehrát/Pozastavit (6) spusťte přehrávání.
- Use the Previous Track (1) and Next Track (2) buttons to navigate between tracks. Long press these buttons for fast rewind/forward.
- Adjust the volume using the Volume Up (4) and Volume Down (5) buttons.
- Press the Stop button (3) to stop playback.
- Cycle through playback modes (Loop All, Single Loop, Random Play) using the Loop Mode Switch (7).
5.3. Wired Connection (AUX Output)
The R400 features a classic 3.5mm AUX output interface (10) for connecting to wired headphones or external speakers.
- Ensure the R400 is powered on and a CD is playing.
- Connect your wired headphones or external speaker to the AUX Output Interface (10) using a 3.5mm audio cable.
- Adjust the volume on both the R400 and your connected audio device as needed.
5.4. Bezdrátové připojení (Bluetooth)
The R400 supports Bluetooth 5.3 for wireless audio output.
- Ensure the R400 is powered on.
- Short press the Output Mode Switch (11) until the Status Indicator Light (8) indicates Bluetooth pairing mode (usually a blinking blue light).
- On your Bluetooth audio device (e.g., Bluetooth headphones, speaker), enable Bluetooth and search for available devices.
- Select "Syitren R400" from the list of devices to pair.
- Once paired, the Status Indicator Light (8) will show a solid blue light.
- Start CD playback on the R400. Audio will now be transmitted to your paired Bluetooth device.
- To reset the Bluetooth connection, long press the Output Mode Switch (11).

6. Údržba
6.1. Čištění
To maintain the appearance and functionality of your R400 CD player:
- Vnější povrch otřete měkkým suchým hadříkem.
- Pro odolné skvrny lehce otřeteamphadřík navlhčete vodou a poté ihned otřete dosucha.
- Do not use abrasive cleaners, solvents, or strong chemicals, as these can damage the finish.
- Keep the CD compartment clean and free of dust. Use a soft brush or compressed air if necessary.
6.2. Preventing Scratches
The R400 features a bottom anti-slip raised design to help prevent scratches when placed on surfaces. However, always handle the device with care and consider using the optional protective case for maximum protection.

7. Řešení problémů
If you encounter issues with your Syitren R400, please refer to the following common problems and solutions:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Žádný zvukový výstup | Volume too low; External device not connected/paired; Incorrect output mode; Faulty cable/device. | Increase R400 volume and external device volume. Ensure headphones/speakers are properly connected (wired) or paired (Bluetooth). Short press Output Mode Switch (11) to cycle modes. Test with different cables/devices. |
| CD se nepřehrává nebo přeskakuje | CD dirty/scratched; CD inserted incorrectly; Unsupported disc format. | Clean the CD with a soft cloth. Re-insert the CD correctly. Ensure the disc is CD/CD-R/CD-RW format. |
| Problémy s párováním pomocí rozhraní Bluetooth | R400 not in pairing mode; External device not searching; Interference. | Ensure R400 is in pairing mode (blinking blue light). Restart Bluetooth on your external device. Try long pressing Output Mode Switch (11) to reset Bluetooth on R400. Move closer to the R400. |
| Zařízení se nezapne | Slabá baterie; Vypnuto. | Charge the R400 fully. Ensure the Power Switch (9) is in the 'On' position. |
8. Specifikace
Detailed technical specifications for the Syitren R400 Retro Wireless CD Player:
| Funkce | Specifikace |
|---|---|
| Název produktu | Syitren Retro CD Player R400 |
| Verze Bluetooth | 5.3 |
| Podporované formáty disků | CD/CD-R/CD-RW |
| Podporované zvukové formáty | CD/MP3/WAV/WMA |
| Decoding Chip Model | SC6137D |
| Movement Model | M93BG6DECK |
| Poměr signálu k šumu | 70 DB |
| Audio Output Thrust | 6.0MW@32 Ω |
| Shockproof Time | 16S |
| Model baterie | 18650 |
| Kapacita baterie | 2000MAH |
| Jmenovitá kapacita | 1800MAH |
| Jmenovitý vstup | DC 5V/2A |
| Full Charge Usable Time | ≥ 4H |
| Doba plného nabití | ≥ 4H |
| Čistá hmotnost | 330G |
| Velikost produktu | Rozměr 161 x 161 x 37 mm |
| Vestavěné reproduktory | ŽÁDNÝ |
| Sdělení | Induction, AUX, Optical Input (Note: Optical Input not explicitly shown in diagrams, AUX is 3.5mm) |
| Zdroj napájení | Střídavý proud, baterie |
| Osvědčení | CE |

9. Uživatelské tipy
- External Audio is Key: Remember, the R400 does not have a built-in speaker. Always connect headphones or an external speaker via the 3.5mm AUX port or Bluetooth for audio output.
- Check Disc Compatibility: Ensure your CDs are in CD, CD-R, or CD-RW format. Other disc types may not be supported.
- Životnost baterie: For optimal portability, ensure the device is fully charged before extended use. A full charge provides approximately 4 hours of playback.
- Reset Bluetooth: If you experience issues connecting to a new Bluetooth device or if a previous connection is unstable, try performing a Bluetooth reset by long-pressing the Output Mode Switch (11).
- Ochranné pouzdro: If you have the optional protective case, use it to safeguard your R400 from bumps and scratches, especially when traveling.
10. Záruka a podpora
V případě reklamací, technické podpory nebo servisních dotazů se prosím obraťte přímo na prodejce nebo výrobce. Uschovejte si doklad o koupi pro ověření záruky.





