Addiesdive Tuna 300M Automatic Dive Watch AD2509vsDuxot Henri Diver Automatic

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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.

Addiesdive Tuna 300M Automatic Dive Watch AD2509 at true scale

Tuna 300M Automatic Dive Watch AD2509

Duxot Henri Diver Automatic at true scale

Henri Diver Automatic

Diameter

41mm

41mm

Lug-to-Lug

44.5mm

lowest

47mm

Thickness

15mm

15mm

Water Resistance

300m

highest

200m

MSRP

$139

lowest

$310

Movement

Seiko NH35

Seiko NH35

Case

4 specs
Lug-to-Lug
44.5mm
47mm
Lug Width
22mm
n/a
Finish
n/a
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
n/a
Green

Movement

2 specs
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$139
$310
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Reviews

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

Addiesdive Tuna 300M Automatic Dive Watch AD2509

Owners widely praise the Addiesdive Tuna 300M Automatic Dive Watch AD2509 for its excellent value, with many finding the case finishing comparable to higher-priced brands and appreciating the sapphire crystal and strong lume. The Seiko NH35 movement is generally considered reliable and keeps good time, with some owners reporting accuracy within +1/+2 seconds per day, while others note figures around -6 seconds per day. The watch is seen as a competent homage, featuring a ceramic bezel insert and solid link bracelet. One owner noted the 39mm case size as easy to wear on a 7-inch wrist. However, some owners express skepticism regarding the actual water resistance beyond casual use, despite the 300m rating, and question the warranty's reliability. The bracelet is frequently described as significantly worse than that found on comparable brands, though still visually appealing. Quality control variance is a concern for some, with instances of misaligned bezel inserts reported.

Duxot Henri Diver Automatic

Owners widely praise the Duxot Henri Diver Automatic for its accuracy, good fit, and value. One owner wishes the lume lasted longer, while another found the bracelet trash and flimsy. A similar model was noted to gain 2-3 minutes per hour after two months. On balance, owners rate the Duxot Henri Diver Automatic highly for its value and accuracy, despite some concerns about bracelet quality and lume longevity.

From video reviewers

The brass wave dial with applied Super Luminous indices delivers striking visual depth and reliable on-wrist legibility across all lighting conditions. The 41mm case with 47mm lug-to-lug proportions and Japanese automatic movement balance compact wearability with robust 20 ATM water resistance, though the 15mm thickness reads substantial for its diameter.

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