Seiko Cal. 4576 - 931

This Spring Drive model from 1973 features a 45mm Titanium case. Powered by the 4576 caliber with 35j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-3394db6c9f3c]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1973

Related Models

• Seiko 6258-807
• Seiko 3838-277
• Seiko 6636-373
• Seiko 7139-228
• Seiko 5699-576
• Seiko 5628-650
• Seiko 5251-611
• Seiko 6189-780
• Seiko 6142-311
• Seiko 5697-468
• Seiko 7032-710
• Seiko 3853-339