Seiko Cal. 4539 - 948

The Seiko 4539-948 represents an important milestone in Seiko's 1967 lineup. Powered by the 4539 caliber with 18j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-674d5a44d921]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1967

Related Models

• Seiko 5282-110
• Seiko 4494-318
• Seiko 6274-131
• Seiko 7052-897
• Seiko 6196-861
• Seiko 7133-811
• Seiko 6611-238
• Seiko 3827-475
• Seiko 6291-636
• Seiko 6639-282
• Seiko 6190-543
• Seiko 3874-681