Side by side

Serica Ref. 5303 Diving ChronometervsHELM Khuraburi

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
Khuraburi
HELMKhuraburi
MSRP $310

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Khuraburi42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Khuraburi40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Khuraburi300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Khuraburi$310

Full specifications

Case

4 specs
Diameter
39mm
42mm
Thickness
12.2mm
16mm
Lug-to-Lug
46.5mm
49mm
Lug Width
20mm
22mm

Crystal & Dial

2 specs
Crystal Shape
Flat
Domed
Dial Color
Enamel Black
Black

Movement

4 specs
Caliber
M100 COSC
Power Reserve
42h
40h
Jewels
25
24
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$310

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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.

HELM Khuraburi

Owners widely report the HELM Khuraburi is liked, with one owner noting it arrived in perfect condition. Some owners find the HELM Khuraburi to be on the large side. On balance, owners rate the HELM Khuraburi positively for its condition and general appeal, despite some finding it large.

From video reviewers

The HELM Khuraburi offers a rugged, solid build for its price point. Availability is a significant drawback, with the watch being difficult to acquire due to infrequent stock.

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