- Limited Edition watch.
- In 1968, Seiko launched a revolutionary new innovation with the world's first hi-beat Diver's watch.
- With a case design inspired by the original 1968 piece, carrying the name 'Marinemaster' from Seiko's heritage in diving watchmaking.
- This limited edition Diver has been created in collaboration with JAMSTEC (the Japan Agency for Marine-Earth Science and Technology), inspired by the construction of the 'Mirai II;' Japan's first icebreaking polar research vessel.
- The dial expresses the oceanographic research ship's trail through the ice; its thick transparent paint is polished to create a deep lustrous effect.
- The dial has a satin-finished professional grade texture, purpose-designed to reduce light reflection for high contrast under water, optimised for diving conditions.
- The case back features 'JAMSTEC Limited Edition' along with the individual limited edition number, with the serial number also engraved on the case back.
- Strong lumibrite ensures clear visibility in low light, with a uni-directional bezel meeting ISO diving standards, featuring a ceramic insert bezel, super-hard coating, and stainless-steel with ceramic finish.
- Crafted at the Shizukuishi Watch Studio in Japan's Iwate prefecture.
- Prospex is a combination of the words 'Professional' and 'Specifications'.
- Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike.
- A blue gradient HMSD dial Seiko men's watch.
- The mechanism used is 8L45 automatic movement. This calibre movement is complete with 35 jewels and a 72 hours power reserve.
- A dual-curved sapphire crystal glass with an anti-reflective inner coating offers enhanced protection against scratches for everyday use.
- Lumibrite hands and indexes make this watch easy to read wherever you are.
- Displays date at the 3 o'clock position.
- The dial features three hands and hour markers.
- A streamlined stainless-steel case watch.
- A stainless-steel bracelet with a three-fold clasp featuring a secure lock and push-button release, plus a solid slide adjuster for a secure and comfortable fit on the wrist.
- 300m water-resistant watch.
- 3 years manufacturer warranty.
| Warranty | 3 Years |
| Edition | Prospex |
| Dial Colour | Blue |
| Date Feature | Date display at the 3 o'clock position |
| Usually For | Men |
| Glass | Sapphire Crystal |
| Water Resistancy | 300 Metres |
| Case Width | 42.6mm |
| Case Thickness | 14.1mm |
| Case Back | Screw |
| Case Material | Stainless-steel |
| Band Material | Stainless-steel |
| Band Width | 20mm |
| Band Type | Bracelet |
| Clasp Type | Three-fold Clasp |
| Bezel | Uni-directional |
| Bezel Material | Stainless-steel |
| Crown | Screw-down |
| Movement | Automatic |
| Calibre | 8L45 |
| Jewels | 35 |
| Power Reserve | 72 Hours |
| Accuracy | +10 to -5 seconds per day |
| Vibrations | 28,000 vibrations per hour (8 beats per second) |
| Magnetic Resistance | 4,800 A/m |
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