A vintage Seiko 6309 “Turtle”
Movement: Seiko Caliber 4R36 Automatic (manual winding, hacking, 24 jewels).
Power Reserve: Approximately 41 hours.
Case Diameter: 44.5mm - 45mm.
Case Material: Stainless steel (brushed and polished).
Case Thickness: 13.4mm.
Lug-to-Lug: Approx. 47.5mm - 48mm.
Lug Width: 22mm.
Crystal: Hardlex (mineral).
Water Resistance: 200m (ISO 6425 diver's watch).
Bezel: Unidirectional, 120-click, blue, with a "grenade" style grip.
Crown: Screw-down, located at the 4 o'clock position.
Dial: Deep blue with LumiBrite (luminous) hands and markers.
Bracelet: Stainless steel with solid end links and diver's extension.
