SINN 105 men's watch in steel, Germany Pop. 05/2023, automatic, matt. Go. Both. See, original. Leather band with spine, bottom and crown, hinged, aviator's ring (lunette) both rotating, black numbered, lighted and pointed, day and date, cal. SW 200-1, D. ca. 41 mm, Sinn Etui, Pap., Band Change Tool as well as Watchmaker Lupe and Catalogue Book v. 2023/2024, EZ 2