Seiko Cal. 6658 - 491

Seiko 6658-491

The 6658-491 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6658 caliber with 26j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-535eeb0f6fd6]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
12.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
160m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1978

Related Models

seikata-wm-535eeb0f6fd6