Seiko Cal. 3865 - 803

Seiko 3865-803

The 3865-803 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3f1d3cdb07c8]

Also known as: Sumo, UFO

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
10.4mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Cream
Jewels
32j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1968

Related Models

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