Introducció
This manual provides detailed instructions for the safe and efficient operation of your G Keni Retro CD Player Boombox, Model SB3720X. Please read this manual thoroughly before using the device and retain it for future reference.
Contingut del paquet:
- G Keni Retro CD Player Boombox (Model SB3720X)
- Manual d'usuari
- Cable de càrrega tipus C.
Informació important de seguretat
- No exposeu el dispositiu a la pluja o la humitat.
- No desmunteu el dispositiu. Encarregueu tot el manteniment a personal qualificat.
- Eviteu col·locar el dispositiu a prop de fonts de calor o sota la llum solar directa.
- Assegureu-vos una ventilació adequada al voltant del dispositiu.
- Utilitzeu només el cable de càrrega subministrat.
- Mantenir fora de l'abast dels nens.
Producte acabatview
The G Keni Retro CD Player Boombox is a versatile audio system featuring multiple playback options and a portable design.
Característiques principals:
- CD, CD-R/RW, MP3, WMA Playback
- Bluetooth 5.0 (Receiver and Transmitter)
- FM Radio (Frequency Range: 76.0 MHz – 108.0 MHz)
- USB Playback (MP3 files, up to 32GB flash drive)
- Entrada/sortida AUX
- Dual HiFi Speakers
- Bateria recarregable de 3000 mAh integrada
- Intuitive Controls and LED Indicators
Identificació de components:

This image shows the G Keni Retro CD Player Boombox from a top-down perspective with its transparent lid open. The CD tray is visible, along with the control panel featuring various buttons and a rotary knob.

This image displays the rear panel of the device, highlighting the various input and output ports. From left to right, these include the TF Card Port, USB Port, 3.5mm Earphone Port, AUX Output Connector, and the Type-C 5V/1A charging port.

Un detallat view of the control panel, illustrating the layout of the buttons for playback control, repeat functions, mode selection, and the rotary volume knob.
Configuració
1. Càrrega inicial:
Before first use, charge the device for 0.5 to 1 hour for optimal battery performance. Connect the provided Type-C charging cable to the charging port on the back of the unit and to a compatible USB power adapter (not included).
2. Encendre/apagar:
Press and hold the power button (usually integrated with the volume knob) for 2 seconds to turn the device on or off.
Instruccions de funcionament
1. Selecció del mode:
Premeu el botó MODE/BT OUT button to cycle through available modes: CD, AUX, Bluetooth (BT IN), FM Radio, USB, and TF Card.
2. Reproducció de CD:
- Open the clear lid on top of the unit.
- Select the CD mode using the MODE/BT OUT botó.
- Place a CD (CD, CD-R/RW, MP3, WMA format) onto the spindle with the label side facing up.
- Rotate the decorative arm to the left to initiate CD playback.
- Utilitza el REPRODUCCIÓ/PAUSA, ANTERIOR, i SEGÜENT botons per al control.
- El REPETIR button cycles through repeat modes (e.g., repeat one, repeat all).
- El +10 button allows skipping 10 tracks forward.

This image illustrates the four steps to play a CD: 1. Press and hold the power button for 2 seconds. 2. Select CD mode. 3. Place the CD with the label side up. 4. Rotate the decorative arm to the left to start playback.
3. Bluetooth Operation (BT IN - Receiver Mode):
- Select Bluetooth mode (BT IN) using the MODE/BT OUT button. The LED indicator will flash, indicating pairing mode.
- On your smartphone or other Bluetooth device, search for "G Keni" in the Bluetooth settings.
- Select "G Keni" to pair. Once connected, the LED indicator will stop flashing.
- You can now stream audio from your device to the boombox.

This image depicts the Bluetooth Receiver function, showing a smartphone wirelessly connected to the G Keni CD Player, streaming music.
4. Bluetooth Operation (BT OUT - Transmitter Mode):
This feature allows the boombox to transmit audio (from CD, FM, USB, AUX) to Bluetooth headphones or speakers.
- Assegureu-vos que els vostres auriculars/altaveu Bluetooth estiguin en mode d'emparellament.
- While in CD, FM, USB, or AUX mode, press and hold the MODE/BT OUT button for 2 seconds. The LED indicator will flash rapidly.
- The boombox will search for and connect to the nearest available Bluetooth receiving device. Once connected, the LED indicator will stop flashing.
- Audio from the selected source will now play through your Bluetooth headphones/speaker.

This image demonstrates the Bluetooth Transmitter function, showing the G Keni CD Player wirelessly sending audio to a pair of Bluetooth headphones.
5. FM Radio Operation:
- Seleccioneu el mode de ràdio FM amb el botó MODE/BT OUT botó.
- Premeu el botó REPRODUCCIÓ/PAUSA button to initiate an automatic station scan. The device will scan and save available stations.
- Utilitza el ANTERIOR i SEGÜENT botons per navegar per les estacions desades.
- For manual tuning, press and hold the ANTERIOR or SEGÜENT botons.
- The FM radio has a built-in antenna. Signal reception may vary based on location.

This image shows the G Keni CD Player operating in FM radio mode, with visual representations of radio waves and example frequencies (FM90.5, FM106.3, FM88.5) indicating its functionality.
6. USB/TF Card Playback:
- Insert a USB flash drive (up to 32GB, MP3 files) into the USB port or a TF card into the TF card slot.
- Select USB or TF Card mode using the MODE/BT OUT botó.
- The device will automatically begin playing MP3 files.
- Utilitza el REPRODUCCIÓ/PAUSA, ANTERIOR, i SEGÜENT botons per al control.

This image highlights the USB and TF card input ports on the G Keni CD Player, demonstrating how to connect external storage devices for MP3 playback. A USB flash drive is shown next to the unit.
7. AUX Input/Output:
- Entrada AUX: Connect an external audio device (e.g., smartphone, MP3 player) to the AUX IN port using a 3.5mm audio cable. Select AUX mode.
- Sortida AUX: Connect the AUX OUT port to external speakers or headphones using a 3.5mm audio cable.
8. Control de volum:
Rotate the large knob on the front panel to adjust the volume.
Manteniment
- Netegeu el dispositiu amb un drap suau i sec. No utilitzeu netejadors líquids ni materials abrasius.
- Keep the CD tray free from dust and debris.
- Quan no l'utilitzeu durant períodes prolongats, guardeu el dispositiu en un lloc fresc i sec.
- Avoid dropping the device. The shock-absorbing corners provide some protection, but extreme impacts can cause damage.

Aquesta imatge ofereix un primer pla view of one of the G Keni CD Player's corners, illustrating the shock-absorbing design intended to protect the device from minor impacts.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El dispositiu no s'encén. | Bateria baixa o sense energia. | Charge the device using the Type-C cable. Ensure the power button is pressed and held for 2 seconds. |
| El CD no es reprodueix o salta. | CD is dirty, scratched, or inserted incorrectly. Incorrect mode selected. | Clean the CD. Ensure the CD is placed label side up. Select CD mode. Try a different CD. |
| Sense so. | Volume is too low. Incorrect mode selected. External headphones/speakers connected. | Increase volume. Verify correct mode. Disconnect external audio devices if using internal speakers. |
| Bluetooth pairing fails (BT IN). | Device not in pairing mode. "G Keni" not selected on source device. | Ensure the boombox is in BT IN mode and flashing. Re-scan and select "G Keni" on your source device. Move devices closer. |
| Bluetooth transmission fails (BT OUT). | Receiving device not in pairing mode. | Ensure your Bluetooth headphones/speaker are in pairing mode. Press and hold MODE/BT OUT for 2 seconds on the boombox to initiate transmission pairing. |
| Mala recepció de ràdio FM. | Senyal feble a la ubicació actual. | Relocate the device to an area with better signal reception. |
| No es reconeix la targeta USB/TF. | Unsupported format or capacity. Card/drive inserted incorrectly. | Ensure the drive is formatted correctly and contains MP3 files. Maximum capacity is 32GB. Reinsert the drive/card. |
Especificacions
| Número de model | SB3720X |
| Marca | G Keni |
| Dimensions del producte (L x A x A) | 10 x 6 x 5 polzades (25.4 x 15.24 x 12.7 cm) |
| Pes de l'article | 3.3 lliures (1.5 kg) |
| Tecnologia de connectivitat | Bluetooth 5.0, USB, AUX |
| Tipus d'altaveu | Stereo Dual Speakers |
| Font d'alimentació | Battery Powered (Built-in 3000mAh rechargeable battery) |
| Durada de la bateria | Up to 8 hours (full volume), up to 11 hours (half volume) |
| Formats de CD compatibles | CD, CD-R/RW, MP3, WMA |
| Freqüència de ràdio FM | 76.0 MHz – 108.0 MHz |
| USB/TF Card Support | MP3 files, up to 32GB maximum capacity |

This image provides key specifications including the device dimensions (8.3 inches wide, 6.0 inches deep, 3.4 inches high) and battery performance (up to 8 hours at full volume, up to 11 hours at half volume).
Garantia i Suport
For warranty information and technical support, please refer to the contact details provided with your purchase or visit the official G Keni weblloc web. Si us plau, conserveu el comprovant de compra per a reclamacions de garantia.
Manufacturer: K&K International Co.,LTD





