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Memory and Storage| memory card support | 64M-32G |
|---|---|
| music format support | MP3 WMA WAV |
| access rate MP3 | 16-320 Kbps |
Audio Specifications| speaker diameter | 40 mm |
|---|---|
| earphone diameter | 3.5 mm |
| earphone output | ≤10 mW*2 |
Frequency Range| frequency range FM | 87.0-108 MHz |
|---|---|
| frequency range MW | 520/522-1710 KHz |
| frequency range SW | 3.00-22.00 MHz |
Power| max output speaker | About 500 mW |
|---|---|
| max current consumption | About 300 mA |
| power source | Lithium battery 3.7 V, External adapter 5 V 500 mA |
Weight and Dimensions| weight | 146 g |
|---|---|
| unit size | 110 x 68 x 25 mm |
Instructions for safely installing the lithium battery into the DE28.
Details on how to charge the device's lithium battery using an external adapter.
Instructions for charging the DE28 unit via a USB connection to a computer.
How to delete single or all stored radio station memories.
Instructions for recording live radio programs to a micro SD/TF card.
How to use the built-in microphone to record audio to a micro SD/TF card.
Controls for starting, stopping, and resuming music playback.
Methods for browsing and selecting music tracks for playback.
How to directly select a song by its number for playback.
Procedure for setting the device's current date and time.
How to enable or disable the alarm function on the DE28.
Setting the specific hour and minute for the alarm to trigger.
Configuring alarm frequency, day selection, and sound mode.
Steps to restore the DE28 to its original factory default settings.
Detailed steps for downloading and installing updated firmware for the DE28.
Guides on using the software tool to update the device's firmware.
Safety guidelines for using, storing, and disposing of the device's lithium battery.
