Addiesdive Tuna 300M Automatic Dive Watch AD2509vsChristopher Ward C60 Trident Reef

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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

Christopher Ward C60 Trident Reef at true scale

C60 Trident Reef

Diameter

41mm

41mm

Lug-to-Lug

44.5mm

lowest

47.9mm

Thickness

15mm

11.4mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

n/a

38h

MSRP

$139

lowest

$995

Movement

Seiko NH35

Sellita SW200-1

Case

3 specs
Thickness
15mm
11.45mm
Lug-to-Lug
44.5mm
47.9mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
n/a
Blue
Lume
None
SLN X1 BL C1

Movement

4 specs
Caliber
Seiko NH35
Sellita SW200-1
Beat Rate
0 vph
4 vph
Power Reserve
0h
38h
Jewels
0
26

Pricing

1 specs
MSRP
$139
$995
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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.

Christopher Ward C60 Trident Reef

The Christopher Ward C60 Trident Reef is widely praised for its vibrant, multi-layered dials and fun, affordable design, with owners appreciating its value and unique aesthetic. Reviewers note the 41mm case size is well-proportioned and wears comfortably due to curved lugs, and the FKM rubber strap is considered comfortable. Some owners desire a fully lumed bezel, and a minority dislike the Bader bracelet. On balance, owners and reviewers rate the Christopher Ward C60 Trident Reef highly for its distinctive design and strong value proposition.

From video reviewers

The dial's vibrant color and unique texture are strong points. The bezel's grip and functionality are a shared weakness. Reviewers disagreed on the watch's value proposition relative to Seiko divers.