Side by side

Seiko 62MASvsSeiko Prospex Sea

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

What people say

Owners + reviewers, side by side

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

Seiko 62MAS

The Seiko Prospex Sea 1965 Heritage Diver's Watch is praised for its vintage-inspired finishing, crisp bezel action, and build quality. Owners widely report the movement averages within +/- 10 seconds per day, though some note accuracy issues. The 40mm case size is considered by some to wear larger than expected, and the price point is a subject of debate, with some finding it too high and others fair. The watch features a 72-hour power reserve from the Caliber 6R55 movement, a 300-meter depth rating, and a box-shaped sapphire crystal. On balance, owners and reviewers appreciate the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined design and solid build quality, despite some reservations about its price and perceived size.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

At a glance

9 of 29 specs differ
Diameter
62MAS40.5mm
Prospex Sea43.8mm
Power Reserve
62MAS70h
Prospex Sea41h
Water Resistance
62MAS200m
Prospex Sea200m
MSRP
62MAS$1,200
Prospex Sea$625

Full specifications

Case

4 specs
Diameter
40.5mm
43.8mm
Thickness
13.2mm
12.8mm
Lug-to-Lug
47.6mm
48.7mm
Lug Width
20mm
22mm

Crystal & Dial

1 specs
Crystal Shape
Curved

Movement

3 specs
Caliber
6R35
4R35
Power Reserve
70h
41h
Jewels
24
23

Pricing

1 specs
MSRP
$1,200
$625
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