Side by side

Seestern S450 Ocean StarvsYema Flygraf CPA10

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Flygraf CPA10
YemaFlygraf CPA10
MSRP $1,614

At a glance

13 of 29 specs differ
Diameter
S450 Ocean Star40mm
Flygraf CPA1040mm
Power Reserve
S450 Ocean Star41h
Flygraf CPA1040h
Water Resistance
S450 Ocean Star100m
Flygraf CPA10100m
MSRP
S450 Ocean Star$299
Flygraf CPA10$1,614

Full specifications

Case

4 specs
Category
Diver
Pilot
Thickness
12mm
9.4mm
Lug-to-Lug
48mm
46mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
White
Standard
Lume
Tritium
None

Movement

5 specs
Caliber
TMI NH35A
Yema CMM.10
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$1,614

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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.

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.

Yema Flygraf CPA10

Owners widely praise the Yema Flygraf CPA10 for its light 40mm titanium case, slim 9.4mm profile, and excellent legibility on its blue brushed dial with applied Super-LumiNova markers. The Yema CMM.10 automatic movement is considered terrific, offering chronometric precision of -3/+5 seconds per day and a 70-hour power reserve. Some owners appreciate the aluminum warranty card and packaging as nice touches. The watch is priced at €1,690. One owner noted concerns about the long-term reliability of older in-house movements due to mixed origins, though praised customer service under new management. Overall, owners rate the Yema Flygraf CPA10 highly for its comfortable wearability and attractive, legible dial design.

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