Seiko Cal. 7121 - 553

The 7121-553 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7121 caliber with 35j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-499931b7cad4]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1981

Related Models

• Seiko 5275-364
• Seiko 4593-621
• Seiko 6366-520
• Seiko 4553-342
• Seiko 4598-636
• Seiko 6259-325
• Seiko 0750-225
• Seiko 3829-262
• Seiko 6347-819
• Seiko 6681-117
• Seiko 4571-655
• Seiko 5265-747