Synchron SEALAB Ti300MvsZenith Defy Extreme Diver

The measurements

Sized up.

Catalogue photos are all shot at the same flattering size. These aren't: every case below shares one millimetre scale.

Synchron SEALAB Ti300M at true scale

SEALAB Ti300M

Zenith Defy Extreme Diver at true scale

Defy Extreme Diver

Diameter

41mm

42.5mm

Lug-to-Lug

45mm

n/a

Thickness

11.9mm

n/a

Water Resistance

300m

600m

highest

Power Reserve

60h

60h

MSRP

n/a

$12,300

Movement

La Joux-Perret G100

n/a

Case

6 specs
Diameter
41mm
42.5mm
Thickness
11.9mm
n/a
Lug-to-Lug
45mm
n/a
Lug Width
20mm
n/a
Finish
n/a
Brushed titanium
Water Resistance
300m
600m

Crystal & Dial

2 specs
Crystal
Sapphire
n/a
Dial Color
n/a
Blue

Movement

5 specs
Caliber
La Joux-Perret G100
n/a
Type
Automatic
n/a
Beat Rate
0 vph
36,000 vph
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
n/a
$12,300

What people say

Owners + reviewers, side by side.

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

Synchron SEALAB Ti300M

The Synchron SEALAB Ti300M is praised for its slim 11.9mm brushed Grade 5 titanium case, a key factor for owners seeking smaller watches. Reviewers highlight the clear sapphire crystal and the Soigné grade La Joux-Perret G100 automatic movement with a 60-hour power reserve. The watch is noted for its resemblance to the Doxa Sub300 and was offered at a compelling pre-order price of US$990. Overall, owners and reviewers rate the Synchron SEALAB Ti300M highly for its thin, wearable titanium case and the value offered by its movement and specifications.

Zenith Defy Extreme Diver

The Zenith Defy Extreme Diver is praised for its comfortable wearability, with reviewers and owners noting the titanium construction makes the 42.5mm case feel light and well-balanced, despite some concerns about its 15.5mm thickness. The watch features exceptional dial legibility due to oversized markers and an orange chapter ring, and its technical aesthetic is described as a blend of classic and modern influences with crisp finishing and a satisfyingly clicky dive bezel. Owners specifically highlight the green lume as a favorite feature, and the silver dial is noted for its cool aesthetic, though it offers less contrast than darker variants. Some reviewers question the practical need for its 1/1000th second chronograph and suggest the design can be somewhat generic. The Zenith Defy Extreme Diver is priced at $22,000, with one source noting a €11,800 price for a variant.

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