Selection criteria
Detroit Watch Co.
39mm 1701 Power Reserve Exhibition
A practical daily-wear candidate with Swiss SW279-1 Automatic & Manual Winding 31 jewels. Shock-absorber-Incabloc. Anachron Hairspring, Glucydur Balance. 28800 Vibrations Per Hour, 4Hz. 38-Hour Power Reserve. Adjusted to +4s to +6s/day. and enough specs to compare fit and ownership basics.