Seiko Cal. 6241 - 237

The 6241-237 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6241 caliber with 28j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-ddfd44247d84]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1971

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