Seiko Cal. 4512 - 283

This Spring Drive model from 1981 features a 40mm PVD Black case. Powered by the 4512 caliber with 21j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-55f1ce941e75]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1981

Related Models

• Seiko 7020-449
• Seiko 6267-646
• Seiko 7138-689
• Seiko 3810-512
• Seiko 6195-817
• Seiko 7177-273
• Seiko 4450-939
• Seiko 4441-421
• Seiko 4551-127
• Seiko 4440-167
• Seiko 6376-379
• Seiko 6622-709