Seiko Cal. 7021 - 487

Seiko 7021-487

This Automatic model from 1981 features a 37mm Stainless Steel case. Powered by the 7021 caliber with 29j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-81af3a87899b]

Also known as: Tuna, Bullhead

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
11.1mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Green
Jewels
29j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1981

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