Seiko Cal. 6650 - 658

Seiko 6650-658

The Seiko 6650-658 represents an important milestone in Seiko's 1978 lineup. Powered by the 6650 caliber with 17j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-40ef638fbcb4]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
11.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Burgundy
Jewels
17j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1978

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