Seiko Cal. 3857 - 242

Seiko 3857-242

The 3857-242 is a sought-after Automatic piece from Seiko's golden era. With its 19mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-8887e157bd5e]

Also known as: Navigator, Golden Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
41mm
Case Thickness
10.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Green
Jewels
24j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1970

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