Side by side

Seestern S450 Ocean StarvsTissot PR516

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
PR516
TissotPR516
MSRP $575
What people say

Owners + reviewers, side by side

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

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

Tissot PR516

Owners and reviewers widely praise the Tissot PR516 for its athletic 1970s charisma, vintage-inspired dial design, and thoughtful finishing. The manual-wind chronograph variant is noted for its robust case and impressive A05.291 movement with a 68-hour power reserve, while the automatic Powermatic 80 variant offers an 80-hour power reserve in a 38mm steel case at an accessible price. However, several sources flag the bracelet clasp as a letdown, describing it as a folded steel or stamped design that does not match the case quality. Some owners find the dial bland or wish the bezel looked different, and one reviewer notes the 14mm thickness of the chronograph can be noticeable. The Powermatic 80 variant's fixed bezel is criticized by one owner as a departure from dive watch principles. On balance, owners and reviewers rate the Tissot PR516 highly for its strong value and retro-inspired design, with the chronograph movement and accessible pricing being key draws.

At a glance

14 of 29 specs differ
Diameter
S450 Ocean Star40mm
PR51640mm
Power Reserve
S450 Ocean Star41h
PR51640h
Water Resistance
S450 Ocean Star100m
PR516100m
MSRP
S450 Ocean Star$299
PR516$575

Full specifications

Case

4 specs
Category
Diver
Chronograph
Thickness
12mm
12.16mm
Lug-to-Lug
48mm
40mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Indices
Applied
Indexes
Lume
Tritium
Super-LumiNova ®

Movement

6 specs
Caliber
TMI NH35A
13 1/4'''
Type
Automatic
Quartz
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$575
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