Prices come from the reviews in their original currency and market. Article dates are shown below.
Specification
HTDHesagraph RitmoCorsa
DirenzoDRZ 08 Cosmonaire GMT
Reference
Not confirmed
DRZ 08
Winding
Manual winding
Automatic winding
Calibre
Sellita SW510M, hand-wound
Sellita SW330-2 Elaboré
Diameter
39 mm
39 mm
Size / thickness
39 × 48 × 12.4 mm
39 × 46 × 10 mm
Power reserve
Not stated by the manufacturer
54 hours
Case material
316L steel; 39 × 48 × 12.4 mm, thickness including crystal
316L steel; 39 × 46 × 10 mm
Functions
Not stated in the review
Not stated in the review
Crystal
Not stated in the review
Not stated in the review
Water resistance
50 m
10 atm; screw-down crown
Price and market
Price and availability: €2,100; check availability, official EU shop, checked November 1, 2026
Not stated in the review
HTD · Hesagraph RitmoCorsa
Strengths
The RitmoCorsa is most convincing as a coherent whole: its vivid dial, clear registers and hand-winding all support the racing idea. Trying the 48 mm case length on the wrist matters more than debating the modest 39 mm diameter.
Things to consider
Water resistance is 50 m. The official shop asks customers to check availability; the power reserve for this version is not published.
The Cosmonaire’s strongest combination is its unusual shape and restrained thickness. It is an interesting candidate for someone who needs a second time zone without another bulky sports GMT.
Things to consider
Try the 39 mm case if you normally wear watches of 42 mm or more. The butterfly clasp comes with a half-link; the manufacturer does not state a tool-free quick-adjustment system.
