Seiko Cal. 6661 - 750

Seiko 6661-750

This Kinetic model from 1977 features a 36mm Hardlex-Coated Steel case. Powered by the 6661 caliber with 29j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-6dcc8c6ecb07]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
15.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
29j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1977

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