QFX BT-90 Manuel page 2

METHOD OF USE
1. Make sure the battery is fully charged before using the equipment.
When the battery indicator light flashes, please connect the charge
audio cable to the power plug socket DC-SV. About 8-10 hours after
charging, the indicator wiII be turned off to represent the full power.
2. When in use, if ON/OFF button is toggled to the OFF direction,
the equipment will be off.
3. When power is on, plug in headset microphone, then you can speak
directly or playing the music, plug in the microphone and speak directly.
4. lnsert TF card, it will play music files from the card automatically.
5. lnsert memory card, it will play music from the card automatically.
Note
1. Maintain the headset microphone distant from the unit when in use
to avoid feedback.
2. In case of rain immediately unplug the battery.
3. Remember to trun off the equipment when not in use and please
keep it in dry area.
4. In order to achieve good results, please do not use the headset mic
while charging the equipment, it's dangerous.
5. When the volume becomes softer or the power indicator light flashes,
please plugin and charge the equipment.