Seiko Cal. 5241 - 640

The Seiko 5241-640 represents an important milestone in Seiko's 1996 lineup. Powered by the 5241 caliber with 31j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-bcda9a081989]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1996

Related Models

• Seiko 0784-249
• Seiko 5250-328
• Seiko 6363-689
• Seiko 4582-231
• Seiko 3825-499
• Seiko 4528-213
• Seiko 6362-277
• Seiko 5254-947
• Seiko 6177-276
• Seiko 5636-840
• Seiko 7175-891
• Seiko 4576-546