Seiko Cal. 6657 - 305

Seiko 6657-305

The 6657-305 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6657 caliber with 22j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-5b96dae790ac]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
13.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Navy
Jewels
22j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1988

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