Top or side reading. One of the most important skills in diving is navigation and for accurate navigation, you need a compass that is not only accurate but easy to read and use. With the AERIS side reading compass, the diver is able to hold the compass level and still be able to easily read the headings through the cut out window on the side. Quick responding and accurate in wrist, hose mount and modules. The compass may also be used with a clip mount boot for attachment to your BC. * Proprietary design ensures quick response and smooth movement * Top or side reading * OceanGlo® luminescent floating card absorbs light and glows approximately 7 times faster and longer than other materials * High visibility lubber line * Large ratcheting bezel * Direct and reciprocal index points