Side by side

Serket Watch Co Reef MarianavsSeiko Ice Diver

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Reef Mariana
Serket Watch CoReef Mariana
MSRP $449
Ice Diver
SeikoIce Diver
MSRP $900
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Serket Watch Co Reef Mariana

Owners widely praise the Serket Watch Co Reef Mariana for its significant value, citing the sapphire crystal, ceramic bezel, and NH35 automatic movement at its price point. Some owners note the bezel turns too easily and suggest the lume could be improved. On balance, owners rate the Serket Watch Co Reef Mariana highly for its bold aesthetic and strong feature set at the price.

Seiko Ice 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.

At a glance

10 of 29 specs differ
Diameter
Reef Mariana40mm
Ice Diver45mm
Power Reserve
Reef Mariana
Ice Diver70h
Water Resistance
Reef Mariana200m
Ice Diver200m
MSRP
Reef Mariana$449
Ice Diver$900

Full specifications

Case

4 specs
Category
Diver
Diameter
40mm
45mm
Thickness
13.2mm
12.9mm
Lug-to-Lug
47.5mm
52.6mm

Crystal & Dial

2 specs
Dial Color
Orange
Black
Lume
BGW9
LumiBrite

Movement

3 specs
Caliber
Seiko NH35
Seiko 6R35
Power Reserve
70h
Jewels
25
24

Pricing

1 specs
MSRP
$449
$900
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