Seiko Cal. 7187 - 770

The 7187-770 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7187 caliber with 24j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-49f65a675ccc]

Also known as: Tuna, Bellmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1990

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