Seiko Cal. 6650 - 720

Seiko 6650-720

This Hand-Winding model from 1990 features a 42mm Hardlex-Coated Steel case. Powered by the 6650 caliber with 29j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-d938046b1fe1]

Also known as: Tuna, Navigator

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
9.1mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1990

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