Seiko Cal. 5287 - 427

Seiko 5287-427

The 5287-427 is a sought-after Solar piece from Seiko's golden era. Powered by the 5287 caliber with 21j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-01aa6e0fbf1f]

Also known as: Baby Tuna

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
14.9mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1981

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