Seiko Cal. 6640 - 114

The 6640-114 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6640 caliber with 25j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-deacc23ee843]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1982

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