Seiko Cal. 6381 - 539

Seiko 6381-539

The 6381-539 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6381 caliber with 30j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-54dc0e08b3bf]

Also known as: Turtle, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
12.9mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1997

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seikata-wm-54dc0e08b3bf