Astron SSH161J1

The Seiko Astron SSH161J1 is a GPS solar watch built for global precision. Powered by the 5X83 movement, it offers automatic time zone adjustment, a 12-hour chronograph, dual-time and world-time functions, and a perpetual calendar valid until 2100.

Its 42mm titanium case is lightweight and durable, featuring a super-clear sapphire crystal, LumiBrite accents, and a smart-adjuster clasp. With 10-bar water resistance and magnetic protection, it’s a sleek, travel-ready companion.

Movement

Caliber Number

5X83

Movement Type

GPS solar

Precision

±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C )

Power reserve

Operating for approx. 6 months (when fully charged), power save: approx. 2 years

Jewels

14

Functions

• Overcharge prevention function
• Power save function
• Chronograph up to 12 hours in 1/20 second increments
• Perpetual calendar to the February 28, 2100
• World time function (38 cities)
• Dual-time function
• Day display
• Power reserve indicator
• Time transfer function (Switching between the main-dial and sub-dial)
• GPS signal reception function (Time zone adjustment, automatic time adjustment, manual time adjustment)
• Satellite acquisition status display function
• Reception result display function
• DST (Daylight Saving Time)
• Function to prevent the GPS signal reception (in-flight mode)
• Automatic hand position alignment function

Case/Band

Case Material

Titanium (super-hard coating)

Case Size

Thickness:12.4mm
Diameter:42.0mm
Lug-to-lug:49.5mm

Crystal

Sapphire crystal

Crystal Coating

Super-clear coating

LumiBrite

LumiBrite on hands and index(es)

Clasp

Three-fold clasp with push button release

Distance between lugs

20

Other Details

Water Resistance

10 bar

Weight

106.0

Features

• Screw case back
• Allergy-safe metal
• Clasp with Smart Adjuster function
• Screw case back