Astron SSH171J1 GPS Solar 2025 Limited Edition

Limited edition of 1,500 pieces

The Seiko Astron SSH171J1 is a high-tech GPS solar watch crafted for precision and global convenience. Limited to just 1,500 pieces, it features the 5X83 movement with ±15 seconds monthly accuracy and a 6-month power reserve.

Built from super-hard coated titanium, its 42mm case houses a dual-time display, chronograph, perpetual calendar, and world time across 38 cities—all powered by GPS. With a sapphire crystal, LumiBrite accents, and a smart-adjuster clasp, it’s durable, comfortable, and ready for travel. A see-through case back engraved with its serial number adds a final touch of exclusivity.

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

Bracelet Length

195.0

Distance between lugs

14

Other Details

Water Resistance

10 bar

Magnetic Resistance

4,800 A/m

Weight

106.0g

Features

• LIMITED EDITION on the case back
• Serial number engraved on the case back
• Allergy-safe metal
• Clasp with Smart Adjuster function
• Screw case back