Pre-Order | Arriving August 2026
Movement
Caliber Number: 6R54
Movement Type: Automatic with manual winding
Precision: +25 to -15 seconds per day
Power Reserve: Approx. 72 hours(3 days)
Jewels: 24
Functions:
- 24-hour hand (dual time display function)
- Stop second hand function
Case / Band
Case Material: Stainless steel (super hard coating)
Thickness: 13.6 mm
Diameter: 39.5 mm
Lug-to-lug: 46.4 mm
Crystal: Curved sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
Band Material: Cow leather
Clasp: Three-fold clasp with push button release
Other Details
Water Resistance: 20 bar
Features:
- Rotating compass inner ring
- Screw-down crown
- See-through & Screw case back
Any purchase through our SEIKO Online Store has a 3-year guarantee.
Frequently Asked Questions
The Prospex HBC007J1 is powered by Seiko's in-house Caliber 6R54 automatic movement with manual winding capability. It features a GMT function and offers an approximate power reserve of 72 hours (3 days).
The GMT function allows you to track a second time zone using the dedicated 24-hour hand and bezel markings, making it ideal for travelers and those who frequently communicate across different time zones.
Yes. As part of the Prospex Land collection, the HBC007J1 is equipped with a rotating compass inner ring, a screw-down crown, and 20-bar water resistance, making it a reliable companion for outdoor exploration.
The watch features a stainless steel case with a super-hard coating, a curved sapphire crystal with anti-reflective coating on the inner surface, and a premium cow leather strap for durability and comfort.
The HBC007J1 has a case diameter of 39.5mm, a thickness of 13.6mm, and a lug-to-lug distance of 46.4mm, offering a versatile size that suits a wide range of wrist sizes.
