Seiko Cal. 6636 - 240

Seiko 6636-240

The Seiko 6636-240 represents an important milestone in Seiko's 1968 lineup. Powered by the 6636 caliber with 23j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-82253c2d3950]

Also known as: Baby Tuna

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
8.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Black
Jewels
23j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1968

Related Models

seikata-wm-82253c2d3950