Seiko Cal. 5278 - 365

The 5278-365 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5278 caliber with 30j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-c8a35a80a755]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1965

Related Models

• Seiko 5639-122
• Seiko 6360-746
• Seiko 6618-675
• Seiko 4487-710
• Seiko 0733-701
• Seiko 7051-459
• Seiko 5290-291
• Seiko 5268-695
• Seiko 5285-947
• Seiko 5298-561
• Seiko 0773-325
• Seiko 5282-909