Seiko Cal. 6366 - 781

The Seiko 6366-781 represents an important milestone in Seiko's 1977 lineup. It features a White dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-12b9d0bc07cf]

Also known as: Tuna, Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1977

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