The HDS uses state-of-the-art Digital electronics design. Twenty brightness levels ensure proper brightness control in either low light or very bright sunlight. An on-board microprocessor provides automatic battery check indicator, up/down brightness scrolling and programmable auto shutdown features. All electronics are fully encapsulated in shock absorbing resin compound.OperationOptics: Transmission holography - 100% parallax freeMagnification: 1x unlimited eye reliefTemperature:-20 to 150F (o...Read More
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