Seiko Cal. 6640 - 115

The 6640-115 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6640 caliber with 26j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-c0352989a977]

Also known as: Pogue, Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1995

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