Seiko Cal. 6154 - 644

The 6154-644 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6154 caliber with 28j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-a8445381d3f5]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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