Seiko Cal. 5644 - 135

The Seiko 5644-135 represents an important milestone in Seiko's 1968 lineup. Powered by the 5644 caliber with 23j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-458d5f2af828]

Also known as: Panda, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1968

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