Seiko Cal. 6638 - 535

The Seiko 6638-535 represents an important milestone in Seiko's 1965 lineup. It features a Champagne dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-6e9a231f7bbb]

Also known as: Rally, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1965

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