Seiko Cal. 5641 - 735

The 5641-735 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-6272c5a40d1f]

Also known as: Monster, Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1979

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