Seiko Cal. 6635 - 155

The 6635-155 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-e45b1fc5ce31]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1992

Related Models

• Seiko 6152-669
• Seiko 6253-204
• Seiko 7021-562
• Seiko 6221-828
• Seiko 6622-848
• Seiko 6176-224
• Seiko 6171-245
• Seiko 6625-437
• Seiko 6644-526
• Seiko 7138-558
• Seiko 7050-382
• Seiko 7124-382