Seiko Cal. 7177 - 428

The 7177-428 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7177 caliber with 17j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-d3102034cf5a]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1976

Related Models

• Seiko 4498-365
• Seiko 5284-680
• Seiko 4595-153
• Seiko 5663-156
• Seiko 6219-609
• Seiko 5215-199
• Seiko 5210-436
• Seiko 6271-177
• Seiko 6650-779
• Seiko 6619-863
• Seiko 7190-552
• Seiko 6177-816