Seiko Cal. 6366 - 304

The 6366-304 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6366 caliber with 17j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-ca618c0c8d21]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1988

Related Models

• Seiko 3898-497
• Seiko 5230-709
• Seiko 7121-526
• Seiko 4527-599
• Seiko 6652-645
• Seiko 0724-350
• Seiko 5248-798
• Seiko 6185-856
• Seiko 6213-554
• Seiko 5262-379
• Seiko 5280-915
• Seiko 6697-941