Unlike some designs which elude to their convenient flash light
housing, Manta has designed a product which is truly human engineered.
Try this simple challenge:
Take your flash light and focus on an object in the distance. Now while you are
maintaining your focal point in the distance, imagine reading an indicator on the side of
the flash light while you maintain the focus on the target. It probably didn't work too
well. Can you now imagine trying this from a boat?

Manta Sonar does not have that problem. It is easy and convenient to view,
it's human engineered.
Battery Back Up
Nothing could be worse than getting out to your favorite fishing location only to discover
the battery has gone dead. Manta has designed extra space right inside the unit so that
you can always have a spare handy, just in case.