Seiko Cal. 6640 - 522

This Hand-Winding model from 1971 features a 46mm Titanium case. Powered by the 6640 caliber with 29j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-c3530bf1e183]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1971

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