Seiko Cal. 5645 - 517

This Hand-Winding model from 1970 features a 45mm Stainless Steel case. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-4588f9ab8a3d]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1970

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