Seiko Cal. 6154 - 487

This Spring Drive model from 1968 features a 41mm Two-Tone case. Powered by the 6154 caliber with 31j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-43d024b85c21]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1968

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