Seiko Cal. 5646 - 859

The 5646-859 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5646 caliber with 29j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-79a98a59fee7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1985

Related Models

• Seiko 0754-607
• Seiko 6146-911
• Seiko 6114-209
• Seiko 6353-510
• Seiko 3873-569
• Seiko 6353-472
• Seiko 5670-216
• Seiko 7120-516
• Seiko 6253-351
• Seiko 4599-515
• Seiko 3818-861
• Seiko 4559-215