Seiko Cal. 3870 - 357

The Seiko 3870-357 represents an important milestone in Seiko's 1994 lineup. It features a Navy dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-cd54ec72c21b]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1994

Related Models

• Seiko 4584-962
• Seiko 5215-555
• Seiko 7125-480
• Seiko 0746-522
• Seiko 5252-542
• Seiko 5231-699
• Seiko 5647-691
• Seiko 4468-185
• Seiko 3883-973
• Seiko 5275-572
• Seiko 7057-153
• Seiko 7070-207