GB-7
Insert one Lithium battery (Cr2025) making sure the polarity (+/-)
matches the marks inside the unit.
(Fig 1)
Fig 1
Fig 2
(Fig 2)
Fig 3
(Fig 3)
USB
USB Button
Play/Pause Button
PLAY/
PLAY/
PAUSE
Corrosion, oxidation, battery-leakage and any other gradually
acidic defect of this nature will invalidate the guarantee.