Seiko Cal. 4557 - 981

The 4557-981 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4557 caliber with 21j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-6020fd39e5ef]

Also known as: Turtle, Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1966

Related Models

• Seiko 4498-689
• Seiko 3820-407
• Seiko 5238-942
• Seiko 7098-710
• Seiko 6661-380
• Seiko 7142-187
• Seiko 5686-148
• Seiko 6684-604
• Seiko 7067-611
• Seiko 4426-338
• Seiko 5279-903
• Seiko 7187-920