Seiko Cal. 6163 - 521

This Hand-Winding model from 1988 features a 41mm Two-Tone case. Powered by the 6163 caliber with 33j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-7ce2b5fc944a]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1988

Related Models

• Seiko 5648-139
• Seiko 6678-318
• Seiko 5675-527
• Seiko 6377-484
• Seiko 7099-981
• Seiko 3871-176
• Seiko 4548-882
• Seiko 7036-985
• Seiko 4576-364
• Seiko 6232-862
• Seiko 4584-739
• Seiko 7045-173