Seiko Prospex HBB004K1

Movement: Seiko Caliber 4R35 Automatic (supports manual winding and hacking/stop-second feature).
Power Reserve: Approximately 41 hours on a full wind.
Case Material: Rugged stainless steel with sharp, angular "Samurai" geometry.
Crystal: Hardlex (Seiko's proprietary hardened mineral crystal).
Water Resistance: 200 meters (660 feet) certified for air diving.
Bezel: Unidirectional rotating diving bezel with a black insert and white markers.
Luminescence: High-visibility LumiBrite on the hands, indices, and bezel pip for legibility in dark environments.
Diameter: 41.7 mm
Clasp: Three-fold clasp with secure lock , push button release with extender
Features:
✅ LIMITED EDITION on the case back
✅ Serial number engraved on the case back
✅ Unidirectional rotating bezel
✅ Screw-down crown
✅ Screw case back

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