
SPECUS SA-1
Technical specifications
Movement: Sellita SW200 M; hand-wound mechanical calibre without a date function or automatic-winding rotor
Functions: hours, minutes, and seconds
Case: 316L stainless steel; 42 mm wide; 14 mm thick; 52.5 mm lug to lug
Dial: sandwich construction with luminous material
Crystal: sapphire with an internal anti-reflective coating
Water resistance: 100 metres
Crown: screw-down
Strap: ostrich leather; 22 mm at the lugs, tapering to 20 mm at the buckle
Buckle: 316L stainless steel
SA-1 / pre-order list
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Sandwich dial
The upper plate forms the markings while the luminous layer beneath illuminates the hour indices.

Pins and expansion modules
Four external attachment points on the case are intended for protective pins and future external modules. At the first-sample stage these parts are changed by service; the movement, seals, and crystal seat remain closed zones.