Seiko Cal. 3872 - 720

The Seiko 3872-720 represents an important milestone in Seiko's 1997 lineup. Powered by the 3872 caliber with 17j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-f5bed5297cfe]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1997

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