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Seiko Astron

Seiko Astron

SolarTitanium

Ref. SBXC088

Collection: AstronCase size: 45.3mmMovement: 5X53

The Seiko Astron, reference SBXC088, is a GMT watch with a 45.3 mm titanium case. The watch has world time, a perpetual calendar and a power reserve indicator. The case is 13.1 mm thick, with a lug-to-lug measurement of 51.9 mm and a water-resistance rating of 100 metres. Solar-powered calibre 5X53 contains 12 jewels and operates for approximately 6 months when fully charged. Over the dial is a box-shaped sapphire crystal with an anti-reflective coating on the inner surface. The dial has a day display; a three-fold clasp with push-button release fastens the watch. Movement accuracy is plus or minus 15 seconds per month without signal reception. LumiBrite appears on the hands and indices.

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Last updated 9 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

CASE

Diameter

45.3mm

Thickness

13.1mm

Lug to Lug

51.9mm

Case Material

Titanium

Water Resistance

100m

Crystal

Sapphire Crystal

Bezel Material

Ceramic

MOVEMENT

Movement Type

Solar

Caliber

5X53

Jewels

12 jewels

BRACELET/STRAP

Clasp Type

Fold Clasp

FEATURES & COMPLICATIONS

GMTLuminous handsLuminous indicesPerpetual calendarPower Reserve DisplaySolar watchWeekdayWorld time watch

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