Seiko Cal. 5641 - 316

The 5641-316 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5641 caliber with 21j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-d454a59c4b38]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

36mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1991

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