Seiko Cal. 6240 - 177

This Hand-Winding model from 1993 features a 37mm Hardlex-Coated Steel case. Powered by the 6240 caliber with 29j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-a989ebe5848d]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1993

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