Seiko Cal. 5257 - 912

The Seiko 5257-912 represents an important milestone in Seiko's 1971 lineup. Powered by the 5257 caliber with 21j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-c7ffcfe03b6b]

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1971

Related Models

• Seiko 4412-633
• Seiko 4493-953
• Seiko 6259-155
• Seiko 6651-453
• Seiko 6279-666
• Seiko 4483-943
• Seiko 7143-962
• Seiko 7077-744
• Seiko 6248-551
• Seiko 5243-222
• Seiko 6246-254
• Seiko 7064-620