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Home/Browse/Seiko/Ice Diver
Seiko Prospex Sea
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Seiko Ice Diver

Diver

Owners widely praise the Seiko Prospex Sea for its robust build, classic dive watch design, and excellent value, with many highlighting its strong lume and comfortable wearability. Reviewers consistently flag its superior bezel action and overall finishing as standout features for its price point. Some owners find the 43mm case size substantial, with one noting it felt big, thick, and heavy on a 6.5-inch wrist, though others consider it a perfect size. The movement's power reserve is noted as less than newer variants by one reviewer. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and robust build at an accessible price.

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4 Variants· 45mm
Lume:LumiBrite
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Retail MSRP
$900
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Alternatives
Case
45mm
Power Reserve
70h
Movement
Automatic
Water Resistance
200m
Crystal
Sapphire
01

Case Dimensions

Diameter
Thickness12.9mm
Lug-to-Lug52.6mm
Lug Width20mm
02

Case Build

Water Resistance200m
03

Crystal & Dial

CrystalSapphire
LumeLumiBrite
04

Movement

Caliber
Seiko 6R35
TypeAutomatic
Beat Rate—
Power Reserve70 hours
Jewels24
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleTextured
BezelRotating (dive)
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026
In a nutshell

The Seiko Ice Diver is an automatic diver watch, with a 45mm case, 12.9mm thick, powered by the Seiko 6R35 movement and a 70-hour power reserve. Water resistance is rated to 200m, under a sapphire crystal. Manufacturer MSRP is $900.

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