Seiko Cal. 4538 - 271

The 4538-271 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4538 caliber with 17j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-f4b299f5f9d8]

Also known as: UFO, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1975

Related Models

• Seiko 6321-421
• Seiko 0714-285
• Seiko 6363-675
• Seiko 6644-720
• Seiko 0748-649
• Seiko 7038-301
• Seiko 7123-824
• Seiko 6244-366
• Seiko 6247-282
• Seiko 7029-437
• Seiko 6669-510
• Seiko 6257-851