Description
Description
The SEIKO ASTRON NEXTER HAB005J is a 2026 limited edition model with a crystal-inspired dial pattern and a fresh crystal green color based on green quartz. Its modern case design, sharp chronograph layout, and refined titanium construction give it a strong premium presence within the Astron lineup.
Powered by Caliber 5X63, this GPS Solar chronograph automatically adjusts by satellite signal and supports world time, dual time, perpetual calendar, day display, and a 1/20-second stopwatch. It combines advanced Seiko technology with practical travel-ready performance.
Limited to 1,200 pieces worldwide, with 500 for Japan, this Core Shop model also includes a black silicone replacement strap and special box. It is an excellent JDM choice for buyers seeking rarity, innovation, and distinctive color.
Key Specifications
- Case size: 43.4 mm × 50.0 mm × 12.4 mm
- Weight: 121 g
- Case material: Pure titanium
- Case coating: DiaShield
- Band: Titanium bracelet
- Clasp: One-push three-fold clasp with smart adjuster mechanism
- Maximum wrist length: 190.0 mm
- Water resistance: 10 bar
- Movement: Caliber 5X63
- Power source: Solar GPS Satellite Radio-Controlled
- Accuracy: ±15 seconds per month when not receiving signal
- Power reserve: Approx. 6 months on full charge, approx. 2 years in power save mode
- Jewels: 14
- Glass: Sapphire crystal
- Glass coating: Super Clear Coating
- Luminous material: Lumibrite on hands and indexes
- Magnetic resistance: Yes
- Functions: 1/20-second chronograph, perpetual calendar, world time (38 time zones), dual time, day display, power reserve display, time transfer, DST, airplane mode, automatic hand position correction, satellite time zone adjustment
- Special features: Smart Switch mechanism, limited edition caseback marking, serial number on caseback, screw back, Comfotex, black silicone replacement strap, special box
- Origin: Japan Domestic Market (JDM)
- Warranty: 3 years
- Model code: HAB005J
- JAN: 4954628473486
- Release date: July 10, 2026
- Limited edition: World limited 1,200 pieces / Japan allocation 500 pieces
- Official price: 330,000 JPY
Key Highlights
HAB005J stands out with its crystal green dial, a color direction that feels rarer and more eye-catching than standard black or blue sports watches. The crystal-patterned surface adds visual depth and helps the limited-edition story feel authentic rather than decorative.
Caliber 5X63 gives the watch strong functional appeal through GPS satellite time correction, chronograph capability, world time, and dual time display. This makes it especially attractive for international buyers who want high-spec Japanese watch technology in a premium sports format.
The pure titanium case keeps the watch lighter on the wrist while maintaining a solid luxury feel. Combined with the included black silicone strap and special box, this Core Shop limited edition has strong collector appeal as well as everyday usability.











