Side by side

Bremont Terra Nova 42.5 ChronographvsSeiko Prospex Sea

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

Terra Nova 42.5 Chronograph
BremontTerra Nova 42.5 Chronograph
MSRP $5,700
Prospex Sea
SeikoProspex Sea
MSRP $1,500

At a glance

13 of 29 specs differ
Diameter
Terra Nova 42.5 Chronograph42.5mm
Prospex Sea43.5mm
Power Reserve
Terra Nova 42.5 Chronograph40h
Prospex Sea70h
Water Resistance
Terra Nova 42.5 Chronograph100m
Prospex Sea200m
MSRP
Terra Nova 42.5 Chronograph$5,700
Prospex Sea$1,500

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
42.5mm
43.5mm
Thickness
14.8mm
13.3mm
Lug-to-Lug
51mm
Lug Width
14.8mm
22mm
Material
316L Stainless Steel
Titanium
Water Resistance
100m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
ENG345
6R35
Power Reserve
40h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$5,700
$1,500

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What people say

Owners + reviewers, side by side

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

Bremont Terra Nova 42.5 Chronograph

The Bremont Terra Nova 42.5 Chronograph is noted for its 42.5mm Cupro-Aluminium case, which is described as blocky with satin finishing and minimal polishing, and a bi-directional bronze compass bezel with a black ceramic insert. Owners and reviewers highlight the satisfying winding action of the crown and crisp chronograph pushers, though one reviewer found the start/stop pusher required significant force. The watch features a green gradient dial with full-block Super-LumiNova numerals and is powered by a chronometer-rated automatic movement with a 56-hour power reserve and 100-meter water resistance. The CuAl7Si2 bronze alloy case is expected to patina over time, offering a warmer look and increased scratch resistance. One reviewer noted the prototype's rear sapphire caseback was too dark to appreciate the movement, and conspicuous text around the tourbillon window detracted from the dial.

Seiko Prospex Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

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