Side by side

Serica Ref. 5303 Diving ChronometervsBoldr BOLDR x Nitecore

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
BOLDR x Nitecore
BoldrBOLDR x Nitecore
MSRP $449

At a glance

10 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
BOLDR x Nitecore38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
BOLDR x Nitecore40h
Water Resistance
Ref. 5303 Diving Chronometer300m
BOLDR x Nitecore200m
MSRP
Ref. 5303 Diving Chronometer$1,768
BOLDR x Nitecore$449

Full specifications

Case

5 specs
Diameter
39mm
38mm
Thickness
12.2mm
12.8mm
Lug-to-Lug
46.5mm
44mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Enamel Black
The Kraken by BOLDR x Nitecore

Movement

3 specs
Caliber
M100 COSC
Seiko NH35A
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$449

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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.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

BOLDR x Nitecore

BOLDR x Nitecore is widely praised for its lightweight 38mm PVD titanium case, excellent legibility, and perfect sizing. Owners and reviewers highlight the unique, topographical map-inspired dial offering fantastic depth, complemented by color-matched Old-Radium C3 lume and subtle branding. The watch is described as durable and powerfully lumed, with the included Nitecore TIKI torch capable of boosting its glow. On balance, owners and reviewers rate the BOLDR x Nitecore highly for its exceptional lume and distinctive dial design at its price point.

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