Seiko Cal. 5617 - 727

The 5617-727 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5617 caliber with 23j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-1be492d51f2e]

Also known as: Sumo, Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1987

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