Seiko Cal. 6140 - 640

Released in 1967, the Cal. 6140 with design code 640 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-e906e5539ea8]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1967

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