Seiko Cal. 7187 - 540

Seiko 7187-540

The 7187-540 is a sought-after Solar piece from Seiko's golden era. Powered by the 7187 caliber with 34j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-8d043f7e4c60]

Also known as: Baby Tuna

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
39mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Silver
Jewels
34j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1993

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