Seiko Cal. 6231 - 157

The Seiko 6231-157 represents an important milestone in Seiko's 1975 lineup. It features a Navy dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-c0a6625a9872]

Also known as: Panda, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1975

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