Seiko Cal. 6156 - 221

The Seiko 6156-221 represents an important milestone in Seiko's 1969 lineup. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-32a2b536fecf]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1969

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