Seiko Cal. 0755 - 634

The Seiko 0755-634 represents an important milestone in Seiko's 1981 lineup. Powered by the 0755 caliber with 20j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-65feeec353d1]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1981

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