The SILVA Mini is perfect to bring as an extra compass, it is super lightweight and takes up minimum space. It can be attached to your jacket with a safety pin, thereby allowing hands-free navigation. A mirror sighting compass should be your choice when you must determine direction over long distances. With the mirror tilted to a 45-degree angle, you can check your direction by looking at the bezel in the mirror while sighting in the correct direction of travel. The red/black North-South lines in the capsule bottom ensures easy and safe settling. The compass needle is made from finest Swedish steel with high quality magnetic features. SPECS: Map measuring scale in inches Turn-able housing usable with the SILVA 1-2-3 System® Night use / luminous markings enable night time navigation up to 4 hours once activated by daylight/flashlight Robust material withstands tough treatment and conditions Built-in sundial helps determine the time of day by the apparent position of the sun Includes a detachable lanyard Accuracy - 1° Clinometer- No Compass capsule / needle - Liquid filled capsule, High quality Swedish steel needle, Hardened steel pivot Declination adjustment - No Declination scale - No Dimensions - Folded: 41x57x14 mm (1.6”x2.2”x0.5”) Durability - Withstand 1M drop into wooden floor Graduation - 360° Illumination - 4 hours after activation in light, Yes Magnifying lens - No Material - Acrylic, PBT/Fiberglass Measuring scales - Inch Patented red/black N/S lines in capsule - Yes Resolution - 5° Safety pin attachment - Yes Sapphire jewel bearing for friction-free movement of the compass needle - Yes Sighting System - Mirror sighting SILVA 1-2-3 - Yes Temperature operating range - -20 to +60 °C, (-4°F to +140°F) Variant - Magnetic North Weight - 23 g (0.8 oz) MPN 37686