Seiko Cal. 6366 - 523

The Seiko 6366-523 represents an important milestone in Seiko's 1971 lineup. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-b15bf1819673]

Also known as: Bullhead, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1971

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