Seiko Cal. 6121 - 509

The 6121-509 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-c90e7a05c47f]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1966

Related Models

• Seiko 6331-715
• Seiko 4412-815
• Seiko 5295-759
• Seiko 7055-858
• Seiko 6218-617
• Seiko 6649-835
• Seiko 4595-436
• Seiko 5241-875
• Seiko 6691-710
• Seiko 6119-479
• Seiko 7035-249
• Seiko 0721-812