Seiko Cal. 6161 - 551

The Seiko 6161-551 represents an important milestone in Seiko's 1976 lineup. Powered by the 6161 caliber with 33j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-fed7da6a416a]

Also known as: Helmet, Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1976

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