Arnold & Son Chonometry Longitude Titanium 42.5mm Mens Watch Blue

Ref. 1LTAT.U01A.N001U

The grade 5 titanium case measures 42.5mm across and 12.25mm thick, with a satin-finished bezel notched at 60 positions — a detail drawn from historical marine chronometers. The crown is screw-down, protected by a shoulder, and water resistance is rated to 100 metres. Both the front domed sapphire crystal and the exhibition caseback carry anti-reflective coatings on each side. The ocean blue dial is PVD-treated and vertically satin-brushed, with rhodium-plated applied indices and Super-LumiNova-treated hands. An open-worked small seconds sits at 6 o'clock; a power reserve indicator occupies 12. Inside, the in-house A&S6302 runs at 28,800vph with a 60-hour reserve and carries COSC chronometer certification. The skeletonised winding rotor is machined from a single block of 22-carat red gold. An integrated titanium bracelet with curved, domed links and a folding clasp completes the watch, with a quick-change system allowing it to be swapped for the included rubber strap.

Reference

1LTAT.U01A.N001U

Brand

Arnold & Son

Case size

42.5mm

Case material

Titanium

Dial

Blue

Crystal

Sapphire

Movement

Automatic

Calibre

A&S6302

Functions

Small seconds, Skeleton dial

Water resistance

100m

Bracelet / strap

Rubber strap

Strap colour

Silver

Clasp

Folding clasp

Lume

Super-LumiNova

Retailer

Goldsmiths