Seiko Cal. 5683 - 646

The 5683-646 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5683 caliber with 30j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-7ceb145691de]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1988

Related Models

• Seiko 6268-255
• Seiko 6320-992
• Seiko 7052-136
• Seiko 6628-882
• Seiko 5264-579
• Seiko 6225-302
• Seiko 6617-188
• Seiko 6116-481
• Seiko 6242-655
• Seiko 7162-633
• Seiko 4461-980
• Seiko 6378-771