Sellita's base grade (2 positions); Caliber Corner lists four SW280-1 grades.
Elaboré
0 / +14 s/day
Sellita grade criteria as for the SW200-1 and SW288-1, mean rate 7 ±7 s/day in 3 positions. Often marketed as "Special".
Top
0 / +8 s/day
Sellita grade criteria as for the SW200-1 and SW288-1, mean rate 4 ±4 s/day in 5 positions. Often marketed as "Premium".
Chronomètre
—
COSC-certified grade.
Automatic moon-phase caliber from Sellita's SW200 family: an SW200-1 base with a small moon-phase disc at 6 that overlaps the date wheel, and a date window at 3 (Caliber Corner, Grail Watch). Sellita's SW288-1 is the related caliber with a larger moon-phase module. Specs as given by Caliber Corner and Grail Watch: 11½ lignes, Ø25.60mm, 5.40mm high, 26 jewels, 28,800 vph, lift angle 50°, ball-bearing rotor, Nivaflex mainspring, hand-winding, hacking, quick-set date, Novodiac or Incabloc shock protection. Power reserve: Caliber Corner gives 41 hours and Grail Watch 38 hours, matching the SW200-1's typical 41h and minimum 38h; the typical figure is recorded. Grail Watch dates the caliber to 2018, Caliber Corner to at least 2015. Grade accuracies are Sellita's standard grade criteria (the same in the SW200-1 and SW288-1 documentation); the SW280-1 technical brochure linked from Caliber Corner returned 404 on sellita.ch on 2026-10-25, and the Cousins UK document page served a bot check, so no factory sheet was read.
echo/neutra Averau 39 Moon Phase
MAEN Lunar Classic 36 Elaboré
MAEN Lunar Classic 36
Detroit Watch Company Pontchartrain Louis XIV Moonphase 39mm
Detroit Watch Company Pontchartrain Louis XIV Moonphase 42mm