![background image](http://html.mh-extra.com/html/accu-chek/aviva-nano/aviva-nano_reference-manual_455907091.webp)
5. The depth indicator shows the current
depth selection. The higher the number,
the deeper the penetration. Twist the
comfort dial to adjust the setting. Start at
2 or 3 for soft skin. Try a higher setting if
your skin is calloused or thick.
6. Press the priming button like a pen until
it clicks. The release button turns yellow.
Do not press the release button while
pressing the priming button.
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