Last week, Frankfurt, Germany-based watchmaker Sinn unveiled two new limited-edition watches ahead of its showing at INHORGENTA, Munich’s annual jewelry trade fair. The two new models include the Sinn 104 St Sa A B E? a special edition of the existing 104 St Sa model ? and the Sinn 158, a vintage-inspired chronograph based on the 1960s German military?s Bundeswehr watch.

Starting with a look at the Sinn 104 St Sa A B E, we find a time-only pilot-style chronograph with a sunburst blue and faux patina color scheme, using the same base design as the previously released, black-dialed 104 St Sa A. The 41-mm polished steel model features sharp lugs, minimal crown guards partially protecting the screw-down crown, and a bidirectional ratcheting bezel with a 60-minute scale with white numerals and topped with a faux patina triangle.
On the dial you?ll find a white outer minute ring accented at each hour with a small rectangle, and Arabic numerals just within these markers designating the time of day. Toward the 3 o?clock position is a day-and-date indicator, while toward the top and bottom of the dial are Sinn?s corporate logo and an ?Automatic? script, respectively. Passing over the dial are two syringe-style hands for the hour and minute, while a diamond-tipped seconds hand accompanies them; each is accented with a luminous paint. Inside the watch is the Sellita SW 220-1, capable of a 38-hour power reserve, which is finished by Sinn and visible via a sapphire caseback.
The...