Introducing a glow-in-the-dark transit! The Miner's D-Light™ is an illuminated version of the classic ComPro™ Transit designed for easier measurements in low light settings such as caves and mines. With the push and release of a button, battery-powered electroluminescent panels illuminate the azimuth ring and baseplate for 60 seconds to allow time for precision measurements. Amazingly, the Miner's D-Light™ is even lighter than the ComPro™, making it now the new lightest Brunton transit on the market! Made in USA. All Brunton Transits come with a high-quality Gfeller leather case. If your main region of transit use will not be in the contiguous United States, your needle will need a special balance. Please visit the Needle Balancing Page to identify your main zone, and select it below. Miner's D-Light™ Transit Manuals and Videos - coming soon Special Instructions: Please read Pull clear battery tab before use To prevent premature battery failure, please store the Miner's D-Light™ Transit in its leather case with ON/OFF button facing UP ONLY use a Duracell 1/3N 3-Volt non-magnetic battery. Other brands may affect compass needle accuracy. 1 year warranty includes all components except electronics and battery. Limit 1 warranty claim per unit for electronics and battery system.