Side by side

Serica Ref. 5303 Diving ChronometervsZelos GT

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
GT
ZelosGT
MSRP $499

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
GT42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
GT40h
Water Resistance
Ref. 5303 Diving Chronometer300m
GT100m
MSRP
Ref. 5303 Diving Chronometer$1,768
GT$499

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
39mm
42mm
Thickness
12.2mm
10.8mm
Lug-to-Lug
46.5mm
42mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
M100 COSC
Miyota 9133
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$499

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Zelos GT 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.

Zelos GT

The Zelos GT is lauded for its value and bold design, with owners highlighting the cool power reserve meter and superb 3-point micro-adjust bracelet. Some owners find the case and lugs could hug the wrist better, and the bracelet is noted as being quite long, requiring significant link removal for a 7.1-inch wrist. The dark green dial, while inspired by Lamborghini, is described as appearing mostly black. Overall, owners rate the Zelos GT highly for its value and the quality of its bracelet at the price point.

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.