Seiko Cal. 4520 - 231

The Seiko 4520-231 represents an important milestone in Seiko's 1995 lineup. Powered by the 4520 caliber with 27j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-eebe8871cd80]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1995

Related Models

• Seiko 4457-618
• Seiko 7069-998
• Seiko 0745-786
• Seiko 5636-440
• Seiko 3812-736
• Seiko 6388-833
• Seiko 7177-860
• Seiko 7067-829
• Seiko 6164-644
• Seiko 6389-456
• Seiko 6114-220
• Seiko 3899-875