Seiko Cal. 3840 - 457

The 3840-457 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-378b44c1e08e]

Also known as: Turtle, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

Related Models

• Seiko 6657-487
• Seiko 4521-874
• Seiko 4448-629
• Seiko 6227-775
• Seiko 5291-254
• Seiko 3829-561
• Seiko 6190-698
• Seiko 6232-875
• Seiko 7189-357
• Seiko 6323-410
• Seiko 5260-952
• Seiko 6188-716