Side by side

Seiko 62MASvsSeiko Prospex Sea 1968 Heritage Diver's GMT

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

62MAS
Seiko62MAS
MSRP $1,200
Prospex Sea 1968 Heritage Diver's GMT
SeikoProspex Sea 1968 Heritage Diver's GMT
MSRP $1,500
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 1968 Heritage Diver's GMT

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and comfortable wearability, offering good value for its price point. Owners and reviewers highlight the attractive silver/white sunray dial, blue ceramic bezel, and the premium feel of the improved bracelet clasp with excellent micro-adjustment. The Caliber 6R54 movement provides a 72-hour power reserve, and real-world accuracy often exceeds its stated range of +25 to -15 seconds per day, with some owners reporting figures around +3 to +5 seconds per day. However, the caller-style GMT functionality is a point of contention for some, who find the GMT scale difficult to read and prefer a flyer GMT at this price. Some also find the crown position at 4 o'clock undesirable, and a few note a lack of dial contrast or illegibility of the inner bezel.

At a glance

7 of 29 specs differ
Diameter
62MAS40.5mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
62MAS70h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
62MAS200m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
62MAS$1,200
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

3 specs
Diameter
40.5mm
42mm
Thickness
13.2mm
12.9mm
Lug-to-Lug
47.6mm
48.6mm

Crystal & Dial

1 specs
Crystal Shape
Curved
Flat

Movement

2 specs
Caliber
6R35
6R54
Power Reserve
70h
72h

Pricing

1 specs
MSRP
$1,200
$1,500
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