The Eternice Chronograph takes the form of an ancient, weathered timepiece with a rugged metal casing and a crystal face that refracts light in prismatic hues. Its surface is etched with mysterious glyphs and patterns that resemble disc flight paths and course obstacles. The Chronograph's inner mechanisms are powered by the eternal ice crystal, allowing it to measure the precise duration between supernatural events with unwavering accuracy.

Though the Chronograph lacks any active agency, its mere presence amplifies the mystical forces at work on the course, triggering crystalline ice formations and other phenomena that serve as clues in the unfolding investigation.