Seiko Cal. 6640 - 527

The Seiko 6640-527 represents an important milestone in Seiko's 1996 lineup. It features a Silver dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-5dc2626fb9de]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1996

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