EONKO L-528 Multi-Function Stereo Radio User Manual

1. Introduction

The EONKO L-528 is a compact and versatile multi-function stereo radio designed for a wide range of audio needs. It integrates several features including Bluetooth connectivity, FM/AM radio, playback from TF cards and USB drives, AUX input, hands-free calling, a built-in flashlight, recording, clock, and alarm functions. This manual provides detailed instructions for setting up and operating your device.

2. Safety Information

Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
Avoid dropping or subjecting the device to strong impacts.
Keep the device away from water and other liquids.
Do not attempt to disassemble or repair the device yourself. Refer to qualified service personnel.
Use only the specified charging voltage (5V ≥ 500mA) to prevent damage.
Keep out of reach of children.

3. Package Contents

Please check the box for the following items:

EONKO L-528 Multi-Function Stereo Radio
USB Charging Cable (Type-C)
User Manual
Wrist Strap

EONKO L-528 radio, packaging, USB cable, and manual — Figure 3.1: Package Contents (Black radio shown)

4. Product Overview

The EONKO L-528 features a clear digital display, intuitive button layout, and various ports for connectivity.

Front view of EONKO L-528 radio in black and silver, showing display, keypad, and speakers — Figure 4.1: Front View of the EONKO L-528 Radio

Detailed front panel of EONKO L-528 radio showing power button, play/pause, skip, mode, record, time, number pad, and display — Figure 4.2: Detailed Front Panel Controls

Side view of the EONKO L-528 radio in silver, showing the tuning knob and various ports — Figure 4.3: Side View with Tuning Knob and Ports

Back view of the EONKO L-528 radio in silver, showing the battery compartment and model information — Figure 4.4: Back View with Battery Compartment

Video 4.1: Product overview demonstrating rotation and mode switching.

5. Setup

5.1 Charging the Battery

Connect the provided Type-C USB charging cable to the charging port on the device.
Connect the other end of the USB cable to a 5V USB power adapter (not included) or a computer's USB port.
The charging indicator on the display will show charging status. It will turn green after fully charged.
A full charge typically takes 4-6 hours and provides 10-20 hours of playback.

5.2 Antenna

For optimal FM/AM radio reception, extend the telescopic antenna fully.

6. Operating Instructions

6.1 Power On/Off

Press the Power button to turn the device ON or OFF.

6.2 Mode Selection

Press the MODE button to cycle through available modes: Bluetooth (BT), FM Radio, AM Radio, TF Card, USB, and AUX.

6.3 Radio Operation (FM/AM)

Extend the telescopic antenna.
Switch to FM or AM mode using the MODE button.
Automatic Scan: Long press the Play/Pause button to automatically scan and save available radio channels.
Manual Tuning: Use the Tuning knob on the side of the device to manually adjust the frequency.
Channel Selection: Use the number buttons (0-9) to directly input a saved channel number or frequency.
Use the Previous/Next buttons to navigate between saved channels.

Radio display showing FM mode — Figure 6.1: FM Radio Mode Display

Radio display showing AM mode — Figure 6.2: AM Radio Mode Display

6.4 Media Playback (TF Card / USB)

Insert a TF card (up to 32GB) into the TF card slot or a USB flash drive (up to 32GB) into the USB port.
The device will automatically switch to TF or USB mode, or you can select it using the MODE button.
The device supports MP3 audio format (8-320Kbps).
Use the Previous/Next buttons to skip tracks.
Press the Play/Pause button to pause or resume playback.
Repeating Function: Press the Repeat button (refer to Figure 4.2 for button location) to cycle through repeat modes (e.g., repeat one, repeat folder, repeat all).
Folder Selection: Use dedicated folder buttons (refer to Figure 4.2 for button location) to navigate between folders on your storage device.
The device will resume playback from the last moment when powered off and on again in TF or USB mode.

Radio display showing TF card mode — Figure 6.3: TF Card Playback Mode Display

Radio display showing USB mode — Figure 6.4: USB Playback Mode Display

6.5 Bluetooth Connectivity

Switch to Bluetooth (BT) mode using the MODE button. The display will show "BT".
On your mobile device, enable Bluetooth and search for available devices.
Select "EONKO L-528" from the list to pair.
Once paired, you can play audio from your device wirelessly through the radio.
The radio also supports hands-free calling when connected via Bluetooth.

Radio display showing BT (Bluetooth) mode — Figure 6.5: Bluetooth Mode Display

6.6 AUX Input

Connect an external audio source (e.g., computer, MP3 player, mobile phone) to the AUX input jack using a 3.5mm audio cable (not included).
Switch to AUX mode using the MODE button.
Audio from the external device will now play through the radio's speakers.

Radio display showing AUX mode — Figure 6.6: AUX Mode Display

6.7 Recording Function

Press the REC button (refer to Figure 4.2 for button location) to start recording audio. Ensure a TF card or USB drive is inserted for storage.
Press the REC button again to stop recording.

6.8 Clock and Alarm Clock

Press the TIME button (refer to Figure 4.2 for button location) to view or set the clock.
Follow on-screen prompts or use the number buttons to set the time.
To set an alarm, long press the TIME button and follow the instructions to set the alarm time and sound.

6.9 Flashlight

The device includes a built-in flashlight on the side. Locate the flashlight button/switch and press/slide it to turn the flashlight ON or OFF.

6.10 Time Shutdown (Sleep Timer)

The device supports a time shutdown function. Press the dedicated Sleep Timer button (refer to Figure 4.2 for button location) to set a timer for the device to automatically turn off.

7. Specifications

Feature	Specification
Model Number	L-528
Body Material	Plastic
Dimensions (WxHxD)	18.8 x 9.1 x 3.2 cm
Product Weight	322g
Power Supply	Rechargeable Battery Pack (18650 Lithium)
Battery Capacity	2000mAh
Input Power	5V ≥ 500mA
Maximum Output	5W*2
Signal to Noise Ratio	87dB
Decoding Format	MP3 (8-320Kbps)
Frequency Response	120Hz-20KHz
FM Radio Frequency	87.5-108MHz
AM Radio Frequency	522-1710KHz
Internal Speaker	50MM 4ohms 3W*2
Charging Time	4-6 hours
Play Time	10-20 hours (at max sound)
Bluetooth	Yes
Screen	Yes
WIFI	No
Functions	Built-In Speaker, Flashlight, Clock, Bluetooth, TF, USB, FM, AM, AUX, Handsfree, Recording, Alarm Clock, Time Shutdown
Certification	CE, FCC, RoHS

8. Troubleshooting

No Power: Ensure the battery is charged. Connect the charging cable and check the charging indicator.
No Sound: Check the volume level. Ensure the correct mode (FM, AM, BT, TF, USB, AUX) is selected. If using AUX, ensure the external device's volume is up.
Poor Radio Reception: Fully extend the telescopic antenna. Try repositioning the radio for better signal.
Bluetooth Not Connecting: Ensure the radio is in Bluetooth mode and your device's Bluetooth is enabled and searching. Make sure the radio is not already paired with another device.
TF Card/USB Not Playing: Ensure the media is in MP3 format. Check if the TF card or USB drive is inserted correctly and not corrupted. The maximum supported capacity is 32GB.

9. Maintenance

Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
When not in use for extended periods, store the device in a cool, dry place.
Avoid exposing the device to dust or sand, which can damage internal components.

10. User Tips

For best sound quality, especially with bass, ensure the device is placed on a stable surface.
When using the recording function, ensure sufficient storage space is available on the TF card or USB drive.
To prolong battery life, avoid fully discharging the battery frequently.

11. Warranty and Support

For warranty information and technical support, please refer to the seller's policies or contact the EONKO customer service directly. Keep your purchase receipt as proof of purchase.

EONKO L-528