Seiko Cal. 6131 - 634

The 6131-634 is a sought-after Solar piece from Seiko's golden era. Powered by the 6131 caliber with 22j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-038ef3edfb2f]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1969

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