Seiko Cal. 6610 - 638

The 6610-638 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6610 caliber with 21j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-4033792c9db3]

Also known as: Golden Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1989

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