Seiko Cal. 6387 - 577

The 6387-577 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6387 caliber with 35j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-c109a05ba740]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1992

Related Models

• Seiko 6315-485
• Seiko 5238-340
• Seiko 0794-200
• Seiko 4449-540
• Seiko 0798-425
• Seiko 7114-779
• Seiko 7150-232
• Seiko 5259-890
• Seiko 0737-897
• Seiko 6344-328
• Seiko 5288-302
• Seiko 5686-801