Seiko Cal. 6243 - 204

The 6243-204 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6243 caliber with 35j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-8c699495f965]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1986

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