The easy-to-read GNX 20 screen with black characters on a white or colored background clearly shows water depth

Also for external components exposed to salty air and seawater

weak green LED lighting behind labels and red LED control light when switch is on

This entry level CHIRP solution provides good depth capability and target separation

Liqui moly olie-dryp stop 300ml grabbag The easy-to-read GNX 20 screenSeals and softens gaskets and o rings! Engine oil additive. Regenerates gaskets and o rings. Seals the engine and maintains the viscosity of the oil. Reduces engine noise, lowers oil consumption and prevents blue nauseating exhaust fumes.