Seiko Cal. 5687 - 850

This Kinetic model from 1978 features a 40mm Titanium case. Powered by the 5687 caliber with 20j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-3c1b1b954dfb]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1978

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