1.On/off
a. Switch the power button of the front board until the green indicator light is bright, it can be used as a sound box if input other audio.
b. Press PLAY/PAUSE for few second, it will check linked device and play it automatically (SD/MMC card will be priority).
c. Other functions according the following introduction
2. Key
click it as play/pause; press it as on/off
click it as choose preview, press it as voice weak
click it as choose next, press it as voice strong
Key A: click it as change to USB equipment from SD/MMC card; click it again as change to SD/MMC card from USB equipment.
Key B: choosing play mode, circle mode or EQ mode
Click it change within play mode, circle mode and sound mode
When it on play mode, please choose song by key or key
When it on circle mode, please choose repeat (repeat 1, repeat all, random, normal) by key or key
When it on EQ modem, please choose jazz, rock, bass, normal and classic by key or key
3.USB, SD/MMC card socket
a. Can play the music downloaded in U port
b. Can connect with computer through cable then used as a SD/MMC reader
4. Power charger
When the machine is power off, you can charge it 2-3 hours by the charger until the green light change to orange. If the power switch is off when charge power, then the indicator light will turn red after finished.
Specification
Operating current: 800mA
S/R: 90db
Audio frequency response: 20-20KHz
Voltage: +5V
Output power: 2.5w X 2