Seiko Cal. 4540 - 860

Released in 1993, the Cal. 4540 with design code 860 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-651ddfebe1cb]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1993

Related Models

• Seiko 6230-329
• Seiko 6344-396
• Seiko 6617-828
• Seiko 3843-339
• Seiko 4423-955
• Seiko 6684-332
• Seiko 5265-631
• Seiko 6190-821
• Seiko 4555-418
• Seiko 6676-616
• Seiko 3836-526
• Seiko 6242-688