1. Important Safety Instructions
Please read these instructions carefully before using the device and retain them for future reference. Adhere to all warnings and follow all instructions to ensure safe operation.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
2. Product Overview
The WISCENT Portable CD Player with Bluetooth and FM Radio (Model: WTB-791) is a versatile audio device designed for various listening experiences. It supports CD, MP3, USB, AUX-IN, Bluetooth, and FM radio playback.

Figure 2.1: Front view of the WISCENT Portable CD Player, showing the display, control buttons, and stereo speakers.
Key Features:
- CD/MP3 Playback: Compatible with CD, CD-R, CD-RW, and MP3 formats. Features include skip, search, and repeat functions.
- Bluetooth Connectivity: Wirelessly connect to Bluetooth-enabled devices for audio streaming.
- USB Input: Play audio files directly from a USB disk (up to 32GB).
- AUX-IN: Connect external wired audio devices via the auxiliary input.
- FM Radio: Built-in FM radio with a telescopic antenna and programmable memory for up to 20 presets.
- Headphone Output: For private listening.
- EQ Modes: Five equalizer modes (ROCK, POP, FLAT, CLASS, JAZZ) to customize your sound.
- Portable Design: Features a portable handle for easy transport.
3. Setup
3.1 Powering the Device
The WISCENT Portable CD Player can be powered by either AC power or batteries.
AC Power:
- Ensure the device is turned off.
- Connect the AC power cord to the AC input jack on the back of the unit.
- Plug the other end of the AC power cord into a standard AC 120V / 60Hz wall outlet.
Battery Power:
- Ensure the device is turned off and disconnected from AC power.
- Open the battery compartment cover located on the bottom of the unit.
- Insert 4 x UM2-C 1.5V batteries (not included), ensuring correct polarity (+/-).
- Close the battery compartment cover securely.

Figure 3.1: Rear view of the device, illustrating the power input and battery compartment location.
3.2 Initial Power On
Press the POWER button to turn on the device. The display will illuminate.
4. Operating Instructions
4.1 Mode Selection
Press the FUNCTION button repeatedly to cycle through the available modes: CD, FM Radio, Bluetooth, USB, AUX-IN.

Figure 4.1: Close-up of the control panel, highlighting the FUNCTION button and LCD display.
4.2 CD Playback
- Select CD mode using the FUNCTION button.
- Open the CD compartment cover by gently lifting it.
- Place a CD (CD, CD-R, CD-RW, MP3) onto the spindle with the label side facing up.
- Close the CD compartment cover. The device will begin reading the disc and playback will start automatically.
- Use the PLAY/PAUSE, STOP, SKIP FORWARD (Next Track), and SKIP BACKWARD (Previous Track) buttons to control playback.
- Press the REPEAT button to cycle through repeat modes (Repeat 1, Repeat All).

Figure 4.2: Top view of the CD player with the disc compartment open, ready for CD insertion.
4.3 FM Radio Operation
- Select FM Radio mode using the FUNCTION button.
- Extend the telescopic antenna for optimal reception.
- Press and hold the PLAY/PAUSE button to initiate an automatic station scan. The radio will scan and save up to 20 available stations.
- Use the SKIP FORWARD and SKIP BACKWARD buttons to navigate through saved presets.

Figure 4.3: The device displaying FM radio frequency, with the telescopic antenna extended for better reception.
4.4 Bluetooth Connectivity
- Select Bluetooth mode using the FUNCTION button. The display will show "BT" or a similar indicator, and the device will enter pairing mode.
- On your Bluetooth-enabled device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "WISCENT WTB-791" (or similar name) from the list of devices to pair.
- Once paired, you can stream audio from your device to the CD player.

Figure 4.4: The CD player wirelessly connected to a smartphone via Bluetooth, demonstrating audio streaming capability.
4.5 USB Playback
- Select USB mode using the FUNCTION button.
- Insert a USB flash drive (up to 32GB) containing MP3 or WMA audio files into the USB port.
- The device will automatically detect and begin playing audio files from the USB drive.
- Use the PLAY/PAUSE, STOP, SKIP FORWARD, and SKIP BACKWARD buttons to control playback.
4.6 AUX-IN Connection
- Select AUX-IN mode using the FUNCTION button.
- Connect one end of a 3.5mm audio cable (not included) to the AUX-IN port on the front of the CD player.
- Connect the other end of the audio cable to the headphone jack or audio output of your external audio device.
- Play audio from your external device. The sound will be routed through the CD player's speakers.
4.7 Volume and EQ Control
- Rotate the VOLUME knob to adjust the audio level.
- Press the EQ button (if available, or refer to remote control) to cycle through equalizer presets: ROCK, POP, FLAT, CLASS, JAZZ.

Figure 4.5: The CD player shown with its remote control, indicating ease of operation from a distance.
5. Maintenance
5.1 Cleaning the Device
- Always unplug the device from the power source before cleaning.
- Use a soft, dry cloth to wipe the exterior surfaces.
- Do not use abrasive cleaners, waxes, or solvents as they may damage the finish.
- For the CD lens, use a specialized CD lens cleaning kit. Do not touch the lens directly.
5.2 Storage
When not in use for extended periods, store the device in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries if storing for a long time to prevent leakage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Batteries depleted or incorrectly inserted. | Check AC power connection; Replace batteries or ensure correct polarity. |
| CD not playing | CD inserted incorrectly; Disc is dirty or scratched; Incorrect mode selected. | Reinsert CD with label side up; Clean or replace CD; Select CD mode. |
| Poor FM reception | Antenna not extended; Weak signal. | Fully extend the telescopic antenna; Reposition the unit for better signal. |
| Bluetooth not connecting | Device not in pairing mode; Bluetooth disabled on external device; Out of range. | Ensure CD player is in Bluetooth mode; Enable Bluetooth on external device; Move devices closer. |
| No sound from USB | USB drive not inserted correctly; Files not supported; Incorrect mode. | Reinsert USB drive; Ensure files are MP3/WMA; Select USB mode. |
7. Specifications
- Brand: WISCENT
- Model Number: WTB-791
- Color: Black
- Connectivity Technology: Auxiliary, Bluetooth, USB
- Supported Standards: CD, MP3, AUDIOBook-CD, WMA
- Speaker Type: Stereo
- Output Power: 2 x 2W RMS (Total 4W)
- Power Source: AC 120V / 60Hz or 4 x UM2-C 1.5V batteries (not included)
- Item Dimensions (L x W x H): 30 x 20 x 20 cm (approximately)
- Item Weight: 1500 Grams (approximately)
- FM Frequency Range: 87.5 - 108 MHz
- USB Disk Support: Up to 32GB
8. Warranty and Support
WISCENT provides the following warranty and support for this product:
- Warranty: 3-year warranty (36 months guarantee).
- Technical Assistance: Lifetime technical support.
- Free Replacement: Free replacement for missing parts or broken products.
- Customer Service: 7/24 WISCENT messaging support for Amazon buyers and sellers.

Figure 8.1: Visual representation of warranty and support details, including a 3-year warranty and 24/7 messaging support.
For further assistance, please contact WISCENT customer support through the Amazon messaging system.





