Seiko HBC002J HBC002 Mechanical Prospex Diver Scuba GMT Stainless Steel Strap Watch 2026.5 release

Movement
Caliber No: 6R54
Drive method: Mechanical automatic (with manual winding)
Accuracy: Daily rate +25 seconds to -15 seconds
Drive duration: Approximately 72 hours when fully wound
Number of jewels: 24 jewels
Functions

24-hour hand (dual time display function)

Seconds stop function

Case & Band
Case material: Stainless steel (bezel: ceramic display ring)
Case coating: Dia Shield
Case size: Thickness 13.3mm, width 42.0mm, length 48.6mm
Glass material: Sapphire
Glass coating: Anti-reflective coating on inner surface
Lumibrite: Yes (hands, indexes, bezel)
Clasp: One-push double lock diver adjuster method
Maximum wrist circumference: 200.0mm

Watch Specifications
Water resistance: 300m air diving water resistance
Magnetic resistance: Yes
Weight: 188.0g

Other Features

Unidirectional rotating bezel

Screw-lock crown

Screw case back