Boderry Seaturtle.Ocean DivervsSeiko Prospex Sea

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

Seaturtle.Ocean Diver

Prospex Sea
Diameter
40mm
41mm
Lug-to-Lug
n/a
46.9mm
Thickness
12.5mm
12.3mm
lowest
Water Resistance
100m
200m
highest
Power Reserve
n/a
70h
MSRP
$249
lowest
$900
Movement
Seiko NH35
Seiko 6R35
Case
5 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Boderry SEATURTLE.OCEAN - Automatic Diver Watch (NH35 movement) for its exceptional value, citing its original design, sapphire crystal, and thin 11.7mm profile for an NH35 movement. One owner reports an accuracy of -1 second per day, while another notes the titanium case and 100m water resistance are well-executed. Some owners report issues with the NH35 movement stopping, though others have had no problems with the brand. A rattling sound, noted by some owners, is considered normal for the NH35 movement and is deemed acceptable given the low price point. Overall, owners rate the Boderry SEATURTLE.OCEAN - Automatic Diver Watch (NH35 movement) highly for its impressive feature set and design at its price point.
Owners widely praise the Seiko Prospex Sea for its value and robust build, with many highlighting its excellent lume and attractive design. Some owners find the 41mm case size perfect, while others with smaller wrists consider it too large, thick, and heavy. The stock rubber strap is noted as uncomfortable for land wear by one owner. Overall, owners rate the Seiko Prospex Sea highly for its design and value at the price point.
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