SEIKO ASTRON SSJ013J1 ‘SAPPHIRE BLUE’ CRYSTAL BOX GPS SOLAR MEN WATCH

The Seiko Astron SSJ013J1 is the all-titanium, blue-dialled member of the Crystal Box series — and the most restrained of the four. The name works on two levels. The dial carries a 'crystal box' pressed pattern, a fine rectangular embossing that references the quartz crystal at the heart of the original 1969 Astron, the world's first quartz wristwatch. And the glass above it is a box-shaped sapphire crystal that sits raised slightly proud of the bezel, giving the watch a geometric side profile you notice more on the wrist than in photographs.

Where the rose gold reference uses colour on the bezel, the SSJ013J1 keeps everything in titanium and lets the sapphire blue dial do the work. The polygonal bezel, case and bracelet all carry a super-hard coating, keeping the watch light at 41.2mm across and 12.0mm thick. Inside is Calibre 3X62, a GPS Solar three-hander that reads satellite signal to find its own time zone and runs entirely on light — no battery changes, and nothing to reset when you land.

At a Glance

• BrandSeiko
• CollectionAstron GPS Solar Crystal Box
• MovementCalibre 3X62 GPS Solar
• Case Size41.2mm
• DialSapphire Blue, Crystal Box Pattern
• BezelTitanium, Polygonal
• Case MaterialTitanium (Super-Hard Coating)
• GlassBox-Shaped Sapphire (Super-Clear Coating)
• Functions3 Hands + Date
• Water Resistance100m (10 BAR)
• BraceletTitanium
• Power ReserveApprox. 6 Months

Why You'll Love It

• Blue against bare titanium is the cleanest combination in the Crystal Box range. Nothing competes with the dial — the case, bezel and bracelet stay monochrome and let the colour carry the watch.
• The pressed crystal box pattern gives the dial depth that a flat colour cannot. It shifts between light and shadow as your wrist moves, so the blue reads differently through the day.
• It sets itself. The watch reads GPS satellite signal to identify your time zone and adjust the time accordingly, so travel does not mean fiddling with the crown.
• Light alone powers it — approximately six months of running from a full charge, with a power save mode of around two years. There is no battery to replace.
• Titanium with a super-hard coating gives you a 41.2mm case that wears lighter than steel and holds its finish better than untreated titanium.
• At 12.0mm thick and 48.6mm lug-to-lug, this is one of the more wearable GPS watches under a shirt cuff — the technology does not come with the usual bulk penalty.
• The perpetual calendar runs correctly to 28 February 2100, so the date never needs correcting for short months or leap years.

Perfect For

• Frequent Flyers
• Business Travel
• Office & Boardroom
• Blue Dial Collectors
• Titanium Wearers
• Dress-Leaning Tech Watches
• Everyday Wear
• Milestone Gift for Him

Key Features

• Calibre 3X62 GPS Solar movement — receives signals from the GPS satellite network to adjust time zone and time automatically, with manual time adjustment available when you want it. Stated accuracy is ±15 seconds per month without a GPS signal.
• Sapphire blue dial with 'crystal box' pressed pattern — a rectangular embossed texture across the dial, referencing the quartz crystal that made the original 1969 Astron possible.
• Polygonal titanium bezel — the faceted bezel shape introduced with the Crystal Box series, finished in titanium to match the case and bracelet.
• Titanium case and bracelet with super-hard coating — lighter than stainless steel, with a surface treatment that raises hardness against everyday scuffing.
• Box-shaped sapphire crystal with super-clear coating — a raised, scratch-resistant crystal that sits slightly proud of the bezel. Sapphire rates 9 on the Mohs hardness scale, and the coating cuts reflections.
• Perpetual calendar to 28 February 2100 — the date display adjusts itself for short months and leap years.
• Power reserve indicator, power save and overcharge prevention — the dial shows remaining charge, the movement parks itself to conserve energy in the dark, and it wakes and corrects itself on exposure to light.
• Satellite acquisition and reception result displays — the watch tells you whether it is searching, and whether the last connection succeeded.
• In-flight mode — a function that prevents GPS signal reception while you are airborne.
• LumiBrite on hands and indexes — charges under light and reads clearly in the dark without drawing power.
• Three-fold clasp with push-button release and 100-metre water resistance.

Technical Specifications

The Seiko Astron SSJ013J1 is a 41.2mm GPS Solar three-hand watch powered by Calibre 3X62, with approximately six months of operation from a full charge and a power save mode of around two years. The case, polygonal bezel and bracelet are titanium with a super-hard coating, measuring 12.0mm thick and 48.6mm lug-to-lug. It features a sapphire blue dial with a crystal box pressed pattern, a box-shaped sapphire crystal with super-clear coating, LumiBrite on hands and indexes, a date display at 3 o'clock, a status sub-dial, a perpetual calendar to 2100, automatic GPS time zone adjustment, in-flight mode, and 100-metre water resistance.

Best Matched With

• Navy Suit
• Grey Flannel Trousers
• White Dress Shirt
• Light Blue Oxford
• Charcoal Knitwear
• Black Leather Belt
• Dark Denim

Frequently Asked Questions

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