Seiko Cal. 6637 - 549

Released in 1973, the Cal. 6637 with design code 549 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-552b0f6522df]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1973

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