Notebookcheck Logo

Seiko’s GPS solar watch lineup just got a major quality-of-life upgrade

Seiko’s new Astron HAB001 pairs an angular titanium case with an icy blue textured dial and GPS Solar movement.
Seiko’s new Astron HAB001 pairs an angular titanium case with an icy blue textured dial and GPS Solar movement.
Seiko’s new Astron GPS Solar HAB001, HAB002, and HAB003 bring practical upgrades to the premium lineup, including quick-swap bands, titanium cases, and a refined luxury-sports design. Powered by the new Caliber 5X63, the watches add satellite-synced dual time, a 24-hour chronograph, and long solar battery life.

Seiko has taken the wraps off three brand new Astron GPS solar watches. The latest lineup brings several notable improvements, including a new Quick-Change system for easy strap removal and replacement and a new Caliber 5X63 with dual-time and 24-hour chronograph function. These are premium offerings, sitting above the HAC001/HAC002 and HAD001/HAD002 models that arrived in late March.

The trio comprises the Seiko HAB001 (Nebula Grey), HAB002 (Astral Onyx), and HAB003 (Celestial Gold). The watches feature a new two-piece titanium octagonal bezel, which the company says helps achieve a low center of gravity and enhances wearing comfort.

From the right: Seiko HAB001 “Nebula Grey,” HAB002 “Astral Onyx,” and HAB003 “Celestial Gold”

The HAB001 is the cleanest of the bunch with its icy blue dial and full titanium bracelet, while the HAB002 goes darker and stealthier with a charcoal-toned finish. The HAB003 swaps the titanium bracelet for a black rubber strap and adds gold accents around the dial, hands, and indices for a slightly flashier look.

he HAB003 swaps the titanium bracelet for a rubber strap and adds gold-tone accents.

New Quick-Change band system

Barring these differences, all three watches are technically identical. They all feature a 43.3mm textured dial with an embossed pattern of interlocking triangles. The sub-dials are arranged horizontally in a symmetrical layout, balancing the dial's chronograph and dual-time displays. The exterior features a super hard coated titanium case and a screw-back case back.

The lineup also introduces a new Quick-Release band attachment system, which supposedly allows users to remove or change the bracelet with just a push of a button.

Caliber 5X63: Seiko's highest performing GPS movement

At the heart of these models is the new in-house Caliber 5X63 solar-powered movement, which combines dual-time tracking with a 1/20-second chronograph that can measure up to 24 hours, a big improvement over Caliber 5X83 found in models like SSH151 and SSH153, which only offer a 12-hour chronograph.

Because it’s GPS-enabled, the watch pulls time zone data directly from satellites, meaning your watch is always perfectly in sync, no matter what time zone you just landed in. Throw in a six-month battery life on a full solar charge (stretching up to two years in power-save mode), an in-flight mode, and a perpetual calendar good through the year 2100, and you’ve got a serious piece of hardware.

Pricing & Availability

Seiko's new Astron GPS solar watches are set to go on sale in June across the US, Japan, Australia, the UK, and Europe. Pricing is as follows:

  • US: $2,700 for the HAB001/HAB002 and $2,600 for the HAB003
  • Japan: ¥308,000 for the HAB001/002, and ¥297,000 for the HAB003
  • UK: £2,450 for all three models
  • Australia: AUD 4,300 for the HAB001 and HAB002, and AUD 4,100 for the HAB003

Source(s)

Google LogoAdd as a preferred source on Google
Mail Logo
static version load dynamic
Loading Comments
Comment on this article
> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 05 > Seiko’s GPS solar watch lineup just got a major quality-of-life upgrade
Kristen Spradlin, 2026-05-13 (Update: 2026-05-13)