Grade AA 14mm Button Compass. Liquid- filled with luminous cardinal points . Water resistant to 3 ATM ( 30 meters ) 100ft, with a working temperature range of -29 to 49C (-20 to 120F ).
Limited to rudimentary navigation work in daylight hours only ie orientating a map to magnetic North but invaluable for maintaining a rough heading in poor visibility.
NOTE. Many sites claim wildly inaccurate figures about duration of luminosity , for nighttime travel a secondary light source will be required.
Dimensions : 14 x 7.1 cm.