Side by side

Serica Ref. 5303 Diving ChronometervsHELM Khuraburi Titanium

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 Titanium
HELMKhuraburi Titanium
MSRP $375

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Khuraburi Titanium42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Khuraburi Titanium40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Khuraburi Titanium300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Khuraburi Titanium$375

Full specifications

Case

5 specs
Diameter
39mm
42mm
Thickness
12.2mm
16mm
Lug-to-Lug
46.5mm
49mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium

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
$375

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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 Titanium

Owners widely praise the HELM Khuraburi Titanium for its exceptional lume, robust build, and great value, with many noting its lightweight titanium construction and comfortable wearability. The 4 o'clock crown and superb crown action are frequently highlighted as positive attributes. Some owners find the watch's thickness, around 16mm, to be substantial, and one reported the Seiko NH38 movement ran over 40 seconds fast per day, while another criticized the NH35 movement's 40-hour power reserve. On balance, owners rate the HELM Khuraburi Titanium highly for its outstanding lume and impressive build quality at its price point.

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