- This watch is a limited edition of 1,500 pieces.
- A limited edition model inspired by the radiance of crystals hidden within jet rock.
- The vivid brilliance of crystals formed deep beneath the earth over countless years is expressed through an all-case design with a solid, multifaceted bezel.
- Coloured accents symbolising the brilliance of the crystals add elegance and refinement to the colour scheme.
- The center links of the bracelet feature a mirror-polished finish, further enhancing the model's exclusive and distinctive character.
- The hands and indices feature LumiBrite for enhanced visibility in low-light conditions.
- The watch features an overcharge prevention function, a power-saving function and a chronograph measuring up to 24 hours in 1/20-second increments.
- The watch features a perpetual calendar up to 28 February 2100, world time across 38 cities, a dual-time function and a day display.
- The watch features a power reserve indicator, a time transfer function for switching between the main and GPS signal reception for time zone adjustment and automatic or manual time adjustment.
- The watch features a satellite acquisition status display, a reception result display and a Daylight Saving Time (DST) function.
- The watch features an in-flight mode to prevent GPS signal reception and an automatic hand position alignment function.
- In an actual product, the case back direction might be different from the photograph.
- The watch features a limited-edition marking and an engraved serial number on the case back, an additional calf strap, a quick-change system and a screw case back.
- A green HMSD dial Seiko men's watch.
- The watch is powered by a 5X63 GPS solar movement with 14 jewels and an operating time of approximately 6 months when fully charged, extending to approximately 2 years in power-saving mode.
- Premium sapphire crystal glass with a Super-clear coating provides better protection from scratches in your daily life.
- Displays date at the between 4 and 5 o'clock position.
- The dial features Pink-gold-tone seven hands and stroke hour markers.
- A watch featuring a black, super-hard-coated titanium case.
- A black titanium, super-hard-coated bracelet finished with a easy-adjust three-fold clasp with push button release to ensure security on the wrist.
- 100 metres water-resistant.
- 2 years manufacturer warranty.
| Warranty | 2 years |
| Edition | Astron |
| Dial Colour | Green |
| Date Feature | Date display at the between 4 and 5 o'clock position |
| Usually For | Men |
| Glass | Sapphire Crystal |
| Water Resistancy | 100 Metres |
| Case Colour | Black |
| Case Width | 43mm |
| Case Thickness | 12.4mm |
| Case Back | Screw |
| Case Material | Titanium |
| Band Colour | Black |
| Band Material | Titanium |
| Band Width | 14mm |
| Band Type | Bracelet |
| Clasp Type | Three-fold Clasp |
| Movement | GPS Solar |
| Calibre | 5X63 |
| Jewels | 14 |
| Power Reserve | 6 Months |
| Precision | ±15 seconds per month |
| Magnetic Resistance | 4,800 A/m |

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