877 Series Digital Chronometer | 5V Lighting, Gray Face Plate, Rear MountDavtrons 800 series clocks are multi functional chronometers with an easy to use two button design. They display universal time, local time, and elapsed time. The 800 series come with two different screen formats, either liquid crystal or incandescent both with illuminated screens that are readable in high sunlight situations. This 877 series chronometer (EDMO# 877A 5V) features 5V lighting with illuminated buttons, a gray face plated, and rear mount