Citizen Series 8 870 Mechanical vs Citizen Series 8 880 Mechanical

Side-by-side at a glance. Click a watch above to open the full reference page.

	Citizen NB6004-83E	Citizen NA1004-87E
Model	Series 8 870 Mechanical	Series 8 880 Mechanical
Caliber	Citizen Cal. 9051 -- in-house automatic, 28,800bph, 50h PR; used in Series 8 870; Citizen manufacture caliber with excellent value proposition	Citizen Cal. 0950 -- in-house hi-beat automatic, 36,000bph, 50h PR; used in Series 8 880; Citizen highest-beat automatic movement
Case size	40.8mm	40mm
Lug-to-lug	47mm	46mm
Years produced	2021–present	2021–present
Brand tier	enthusiast	enthusiast
Era	modern	modern
Movement tier	Unclassified movement	Unclassified movement
Market median (excellent / full-set)	n/a	n/a
Typical range	n/a	n/a
Confidence	low	low
Categories	sport, dress	integrated-bracelet, dress, sport
Editorial	yes	yes