Since we have had a total of five units in house, we've been able to do some extended usage testing to see if the Hybrid light engine maintains its brightness and color characteristics over time.
The brightness of its light ball only parts per million, and only in the total solar eclipse or with a special instrument to see the corona.
它的亮度仅为光球的百万分之一，只有在日全食时或用特制的日冕仪才能看见。
3
The Tritium illuminates the aiming point in total darkness, and the fiber-optic self-adjusts reticle brightness during daylight according to ambient light conditions.