Seiko Cal. 3857 - 307

Seiko 3857-307

The 3857-307 is a sought-after Automatic piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-823e932825f1]

Also known as: Monster, World Timer

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
14.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Burgundy
Jewels
21j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1976

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