Seiko Cal. 6633 - 251

This Hand-Winding model from 1986 features a 35mm Hardlex-Coated Steel case. It features a White dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-126d33e9481d]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1986

Related Models

• Seiko 6140-873
• Seiko 6665-121
• Seiko 7026-464
• Seiko 3842-638
• Seiko 6111-493
• Seiko 3830-785
• Seiko 6281-290
• Seiko 5294-719
• Seiko 6219-886
• Seiko 6360-271
• Seiko 6658-269
• Seiko 0787-361