The ETA 2800 is a manual calibre from ETA.
Like the closely-related 2802 (date only) and 2808 (day/date) movements, the 2800 is an 11.5 ligne, 21,600 bph manually-wound movement.
All members of the 2800 “family” are related, but this series is closest to the automatic 2820/2822/2828 line, which shares similar specs.