Seiko Cal. 4438 - 957

This Solar model from 1992 features a 37mm PVD Black case. Powered by the 4438 caliber with 23j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-1d69c4e5066b]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1992

Related Models

• Seiko 6631-623
• Seiko 6136-125
• Seiko 5630-845
• Seiko 3885-483
• Seiko 6319-520
• Seiko 6271-817
• Seiko 4472-985
• Seiko 5692-760
• Seiko 4459-909
• Seiko 7025-219
• Seiko 5245-194
• Seiko 6391-667