Underwater compass with glow-in-the-dark dial for clear navigation in low light or turbid water. Durable, easy-to-access design that mounts to an Aqualung snorkel tube and offers versatile attachment options for other dive gear. Key benefits Reliable navigation at depth: Phosphorescent housing and needle card absorb light and glow underwater so headings remain visible in dark or murky conditions. Designed to guide direction to depths up to 50 meters. Hands-free, quick checks: Hose-mount design lets you attach the compass to your Aqualung snorkel tube for fast, on-the-go heading checks without having to hold or fumble for the compass. Built to last in harsh conditions: Constructed from high-quality ABS and organic glass to withstand underwater use while maintaining clarity and structural integrity. Reduced navigation errors: Large, well-marked luminous numbers and a clear reading window make bearings easy to read at a glance, helping maintain correct orientation during dives. Features and specifications Illumination: Phosphorescent box and needle card that absorb light and glow underwater (no batteries required). Depth rating: Effective guidance to depths of up to 50 meters. Materials: Durable ABS body with organic glass viewing surface. Temperature range: Operates reliably from -30 °C to +60 °C. Mounting: Hose design attaches easily to Aqualung snorkel/tube; opposite end includes a hanging loop for attachment to other dive gear. Readability: Specially designed viewing window with large, illuminated numerals and indicators for quick, accurate readings. Practical use scenarios Night or low-visibility dives: Maintain a clear compass heading when natural light is limited or water visibility is poor. Recreational reef and wreck dives: Keep a constant, easily visible reference mounted to your snorkel tube for route-finding and navigation back to the exit point. Dive training and buddy checks: Attach to equipment for convenient pre-dive checks and in-water orientation practice without removing or holding the compass. What it solves Eliminates the need to search for or hold a separate compass during a dive. Improves situational awareness and reduces the chance of navigation errors in low light or turbid water. Offers a robust, low-maintenance solution that stays functional across a wide temperature range and at depth. Compatibility and care Designed to attach directly to Aqualung snorkel/tube; hanging loop enables additional attachment options with standard dive gear. Rinse with fresh water after use and avoid prolonged exposure to direct sunlight to preserve phosphorescent performance. Includes clear, accurate navigation at depth, durable materials for demanding environments, and a practical hose-mounted form factor for easy, hands-free use.