Newlux WindPure Desk W300, Manual

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USE AND OPERATION
Before each use, check that the unit is in good condition and that
the USB is not damaged. If the USB is damaged, contact the retailer or
the Technical Support Service (TSS).
Battery
Fully charge the lithium battery before use. Then
connect the USB cable to the body of the ventilator
and the device will begin to charge (note that there
is no indicator light during charging). A full charge
will take approximately 2-3 hours.
Device operation
Make sure that the speed control is in the OFF position before plugging
the power cable into the USB power supply.
The fan has 4 speed levels:
0 = Off V1 = Minimum speed V2 = Medium speed
V3 = High speed V4 = Maximum speed
USB cable
Control panel