Seiko Prospex SeavsSynchron Sealab Ti300M

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures

Measurements

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

Seiko Prospex Sea at true scale

Prospex Sea

Synchron Sealab Ti300M at true scale

Sealab Ti300M

Diameter

42mm

41mm

Lug-to-Lug

48.6mm

45mm

lowest

Thickness

13.3mm

11.9mm

lowest

Water Resistance

300m

300m

Power Reserve

72h

highest

60h

Movement

Seiko 6R54

La Joux-Perret G100

Case

4 specs
Diameter
42mm
41mm
Thickness
13.3mm
11.9mm
Lug-to-Lug
48.6mm
45mm
Material
Stainless Steel
Titanium

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
n/a
Dial Color
n/a
n/a
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
Seiko 6R54
La Joux-Perret G100
Power Reserve
72h
60h
Jewels
24
0
Keep your wishlist and collection together in the appExplore the app

Reviews

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

Seiko Prospex Sea

The Seiko Prospex Sea is widely recognized for its excellent value and solid build quality, with many owners appreciating its classic dive watch design and legible dial. Reviewers consistently praise its lume, with one owner noting it as excellent. The watch's finishing is also a frequent highlight, described as impressive and well-executed for its price point. Some owners find the 42mm case size wears well, even on smaller wrists, while others describe it as substantial and potentially uncomfortable for smaller wrists. The movement is noted as a 6R54 automatic. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its robust construction and classic dive watch aesthetics at a fair price.

Synchron Sealab Ti300M

The Synchron SEALAB Ti300M is praised for its 11.9mm brushed Grade 5 titanium case, offering a thinner profile than many dive watches. Owners find enjoyment in its specifications and appearance, noting its resemblance to the Doxa Sub300. The La Joux-Perret G100 movement is highlighted for its Soigné grade finishing and 60-hour power reserve, all presented at a compelling price point. Overall, owners and reviewers rate the Synchron SEALAB Ti300M highly for its comfortable, thinner case design and well-finished movement at the price.

Similar watches

Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.

DiscussionNot started

Also compared

Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.