Seiko Cal. 5686 - 437

The Seiko 5686-437 represents an important milestone in Seiko's 1985 lineup. Powered by the 5686 caliber with 18j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-bebad673867a]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1985

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