Seiko Cal. 7187 - 770

Seiko 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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