Side by side

Serica Ref. 5303 Diving ChronometervsSternglas Naos XL

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
Naos XL
SternglasNaos XL
MSRP $237

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Naos XL42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Naos XL
Water Resistance
Ref. 5303 Diving Chronometer300m
Naos XL50m
MSRP
Ref. 5303 Diving Chronometer$1,768
Naos XL$237

Full specifications

Case

5 specs
Category
Diver
Sport
Diameter
39mm
42mm
Thickness
12.2mm
6.6mm
Lug-to-Lug
46.5mm
47mm
Water Resistance
300m
50m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
M100 COSC
Miyota 9U15
Type
Automatic
Quartz
Power Reserve
42h
Jewels
25
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$237

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Sternglas Naos XL gets more votes, a community discussion, or a price drop. No account needed.

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.

Sternglas Naos XL

Owners widely praise the Sternglas Naos XL for its versatile Bauhaus design, domed sapphire crystal, and value, with some finding its larger size comfortable and refined for its price. However, opinions are split on its aesthetic appeal, with one owner finding the hands and face underwhelming, while others appreciate the minimalistic dial. The date font is noted as too small to be useful by one owner, and the stock strap is generally considered basic or prone to wear. Accuracy figures vary, with one owner reporting a Miyota movement running fast and another noting +13 seconds per day. Overall, owners rate the Sternglas Naos XL highly for its Bauhaus aesthetics and affordability, despite some reservations about the movement and strap.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.