Cocktail Time 'Blue Moon' Open Heart 40.5mm Mens Strap Watch

Ref. SSA405J1

Part of Seiko's Presage Cocktail Time line, this open-heart dress watch centres on a deep gradient blue guilloché sunray dial with silver-tone baton indices and matching hands. An aperture at 9 o'clock reveals the movement beneath, while the box-shaped Hardlex crystal adds a pleasingly domed profile. The polished stainless steel case measures 40.5mm across and 11.8mm thick, with a lug-to-lug span of 47.5mm. A see-through screw case back exposes the 4R38 automatic, which beats at 21,600vph with a 41-hour power reserve and supports both hand-winding and hacking. A blue calfskin leather strap with a push-button deployment clasp completes the watch.

Reference

SSA405J1

Brand

Seiko

Case size

40.5mm

Case material

Stainless steel

Dial

Blue

Crystal

Hardlex

Movement

Automatic

Calibre

4R38

Functions

Small seconds, Skeleton dial

Water resistance

50m

Bracelet / strap

Leather strap

Strap colour

Blue

Clasp

Three-fold clasp

Lume

Luminous

Retailer

Goldsmiths