Seiko Cal. 5240 - 438

The Seiko 5240-438 represents an important milestone in Seiko's 1985 lineup. It features a Navy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-f2d040c03227]

Also known as: UFO, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1985

Related Models

• Seiko 6147-100
• Seiko 4476-282
• Seiko 3849-446
• Seiko 6273-387
• Seiko 3852-110
• Seiko 5671-786
• Seiko 5217-190
• Seiko 6237-869
• Seiko 5631-649
• Seiko 4484-595
• Seiko 5246-118
• Seiko 7154-417