Seiko Cal. 6241 - 678

The 6241-678 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6241 caliber with 31j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-098ea563dc8e]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1978

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