Seiko Cal. 6658 - 987

Seiko 6658-987

The Seiko 6658-987 represents an important milestone in Seiko's 1990 lineup. Powered by the 6658 caliber with 23j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-636be0f3e798]

Also known as: Helmet, Sea Horse

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
40mm
Case Thickness
10.1mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
160m
Dial Color
Navy
Jewels
23j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1990

Related Models

seikata-wm-636be0f3e798