Seiko Cal. 5616 - 640

This Automatic model from 1976 features a 43mm Titanium case. Powered by the 5616 caliber with 18j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-5aa9b198accf]

Also known as: Panda, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1976

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