Seiko Cal. 5251 - 730

Released in 1978, the Cal. 5251 with design code 730 was part of Seiko's domestic market collection. Powered by the 5251 caliber with 21j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-a3cb337cafc3]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

Related Models

• Seiko 6177-914
• Seiko 5685-315
• Seiko 6660-779
• Seiko 3896-560
• Seiko 5694-824
• Seiko 6393-684
• Seiko 7035-474
• Seiko 6183-146
• Seiko 5695-981
• Seiko 4459-149
• Seiko 4484-475
• Seiko 6250-682