Derwent Spec

38mm diameter, 9mm depth
Japanese Miyota 6T33 manual mechanical movement
Accuracy of +20/-15 seconds per day
Power reserve of 40+ hours
Hi-dome custom acrylic crystal
Solid engraved case-back with port-hole crystal
Unique domed dial profile with chapter ringt
Black leather strap with polished buckle
20mm lugs
3 ATM