Seiko Cal. 5646 - 367

The 5646-367 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-005ce58fc0a2]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1972

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