This is a music player that supports MP3, WMA, JPEG, MTV and other formats. It supports USB2.0 interface and can connect to the computer to transfer data.
The DE840 is a compact multimedia player with a 1.8‑inch TFT full‑color LCD. It supports video playback in SMV/SMA formats, JPEG images, audio files such as MP3, WMA and WAV, and includes an FM radio tuner (87.5‑108 MHz). The device connects via USB 2.0 for file transfer and firmware updates, and offers headphone output with a power rating over 3 mW per channel.
Safety notes advise keeping the player away from moisture, extreme temperatures, and dusty environments. The built‑in 280 mAh battery should be fully charged (approximately 2‑5 hours) before first use, and recharged promptly when the battery indicator is low. Headphone volume should be kept at a safe level to avoid permanent hearing loss, and the device should not be opened or repaired by the user. This manual is written in Chinese.
| Display | 1.8‑inch TFT color LCD |
|---|---|
| Video Format | SMV |
| Battery Capacity | 280 mAh |
| Battery Life (audio playback) | ≈8 hours |
| Headphone Output Power | >3 mW per channel |
| USB Interface | USB 2.0 |
| Weight | 59 g (including battery) |
| Dimensions | 64 mm × 43 mm × 13.5 mm |
A full charge takes about 2 to 5 hours.