The JK-U604UL is a USB‑powered multimedia speaker with dimensions of 60 mm × 182 mm × 60 mm and a weight of 470 g. It operates from a 5 V USB source delivering 1 W per channel (RMS) and offers a frequency response of 300 Hz‑6 kHz, with a maximum instantaneous output of 120 W (PMPO). The speaker includes a line‑control unit for volume adjustment and a USB connector compatible with PCs.
The manual explains how to connect the speaker via its USB port, control playback volume using the increase/decrease keys, and use the mute function. Safety instructions advise against using the device in humid or rainy environments, prohibit opening the case, and require power disconnection before cleaning or if the unit becomes wet. Service contact information is provided for repairs. This manual is written in Chinese.
| Dimensions | 60 mm × 182 mm × 60 mm, 470 g |
|---|---|
| Power Input | USB DC 5 V, 1 W × 2 (RMS) |
| Frequency Response | 300 Hz‑6 kHz |
| Output Power | 1 W × 2 (RMS) |
| Maximum Instantaneous Output | 120 W (PMPO) |