Designed with readability in mind, Aqua Lung&';s Compass is perfect for precise navigation under any conditions. The compass module can be easily installed in an Aqua Lung two-gauge console or is a handy spare for a save-a-dive-kit. Large easy to read numbers with a large side view window allows for easy and accurate navigation. Large, secure 360Adeg ratcheting bezel and luminescent gauge face for easy reading in low light. Designed with Readability in Mind Perfect for Precise Navigation Under any Conditions Module: Add-On to Console or Great Spare Large Easy to Read Numbers Side View Window: Easy and Accurate Navigation Large, Secure 360Adeg Ratcheting Bezel Luminescent Gauge Face for Easy Reading in Low Light Fluorescent Markings at 10Adeg 20Adeg 30Adeg and 130Adeg