Seiko Cal. 4577 - 747

The 4577-747 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-3fef6ab12f7f]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1994

Related Models

• Seiko 6219-263
• Seiko 5625-263
• Seiko 5281-378
• Seiko 6359-851
• Seiko 5685-106
• Seiko 6622-350
• Seiko 3848-692
• Seiko 6119-117
• Seiko 6690-535
• Seiko 4544-338
• Seiko 6367-597
• Seiko 6688-983