Seiko Cal. 4577 - 703

This Hand-Winding model from 1976 features a 36mm Hardlex-Coated Steel case. Powered by the 4577 caliber with 18j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-bf84e7a2cd56]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1976

Related Models

• Seiko 6280-937
• Seiko 5651-155
• Seiko 6650-592
• Seiko 6186-155
• Seiko 5247-743
• Seiko 4515-555
• Seiko 4520-666
• Seiko 5214-796
• Seiko 5222-304
• Seiko 7166-734
• Seiko 3879-710
• Seiko 7091-975