Timetec Premium groups three distinct DDR4 speed grades — 2133, 2400, and 2666 — under a single product line named for its fastest tier, worth knowing before assuming every kit sold under this name runs at 2666.
This 2×8GB listing is rated 2400 MT/s CL17, one of several timing combinations sold across capacities from 8GB single sticks to 32GB pairs. Because the line spans three JEDEC speed bins rather than one, the number printed on a given kit's label is the figure to check, not the family name.
This is standard unbuffered UDIMM DDR4 without RGB lighting, built for consumer desktop boards.