Seiko Cal. 6637 - 875

The 6637-875 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-056c4cf8df1f]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1968

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