Seiko Cal. 5648 - 186

This Automatic model from 1972 features a 37mm PVD Black case. Powered by the 5648 caliber with 19j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-0b0aba8ae6e7]

Also known as: Bullhead, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

Related Models

• Seiko 6173-208
• Seiko 4481-882
• Seiko 6667-332
• Seiko 5225-678
• Seiko 4439-596
• Seiko 6153-192
• Seiko 7129-734
• Seiko 6347-807
• Seiko 4539-683
• Seiko 6254-786
• Seiko 4571-906
• Seiko 4434-755