Seiko Cal. 5617 - 727

Seiko 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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