Pull out the magnifier to first step position, light source switch will not be opened.If sunlight is insufficient, it is advisable to pull it out to second step position, the light source switch will be opened automatically at this time.Therefore, the magnifier can be used under insufficent sunlight or dark environment.

Wist off battery compartment to replace batteries by upward pulling with hand or coin; Put new button-shaped batteries into it according to the"+""-"mark of batteries.