14 mm Button Compass
- Grade AA Liquid-Filled
- Highly LUMINOUS approximately 7-8 hours
- Working temperature range of -20 degrees F to 120 degrees F
- Water resistant to 100 ft (30 m) 14mm diameter x 7.1 mm height
Tested on Dartmoor, England in late winter. Accurate. Smooth movement of compass card in fluid. No bubbles formed in the fluid, even in cold conditions. The luminous markers work well and gave a clear and unambiguous indication of direction in darkness. Overall, an excellent and inexpensive SERE compass.
You will be hard pressed to find one smaller and more accurate, tested in the jungles of south east asia against bigger suunto units and found superb.