Long-lasting luminous effect: The luminous display becomes brighter with longer continuous exposure time, providing convenient visibility.Shockproof and crush Made of high-strength zinc alloy Material to withstand travel pressure and ensure durability.Adjustable magnetic declination: Manually correct magnetic declination for higher accuracy in various outdoor scenarios.Multifunctional geological compass: Features a clear dial scale for easy reading, making it for geological survey, orienteering, and outdoor adventure.Waterproof and Crafted with Materials to withstand outdoor elements and ensure long-lasting performance.Spec:Condition: Brand NewItem Type: CompassMaterial: Aluminum Alloy, Zinc AlloyColor: GreenAccuracy: ? 1Whether Luminous: YesWhether Waterproof: YesProduct Use: CompassSize: Approx. 83 x 70 x 35mm / 3.3 x 2.8 x 1.4inPackage List:1 x Compass1 x BagNote:The luminous effect means that the fluorescent powder can only appear after being exposed to light, sunlight, light, etc. The longer the continuous exposure time, the longer the luminous display will be. There is no luminous effect without exposure.