Side by side

Serica Ref. 5303 Diving ChronometervsLongines SPIRIT

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
SPIRIT
LonginesSPIRIT
MSRP $2,550

At a glance

19 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SPIRIT40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SPIRIT72h
Water Resistance
Ref. 5303 Diving Chronometer300m
SPIRIT100m
MSRP
Ref. 5303 Diving Chronometer$1,768
SPIRIT$2,550

Full specifications

Case

7 specs
Category
Diver
Sport
Diameter
39mm
40mm
Lug-to-Lug
46.5mm
49.7mm
Lug Width
20mm
21mm
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Both sides
Dial Color
Enamel Black
Black
Indices
Applied
Applied Arabic numerals

Movement

7 specs
Caliber
M100 COSC
L888.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
42h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
COSC
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$1,768
$2,550

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Longines SPIRIT 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.

Longines SPIRIT

Owners widely praise the Longines SPIRIT 37mm for its excellent value, refined finishing, and vintage-inspired design, with many highlighting its applied Arabic numerals and appealing dials. The smooth winding action and technical capabilities like the 72-hour power reserve and silicon hairspring are also noted strengths. However, some owners find the bracelet to be "tinny" and light, and the lack of tool-less micro-adjustments on the bracelet is a recurring point of dissatisfaction. The date window at 3 o'clock is polarizing, with some disliking its placement and color, and the lugs are perceived by some as long for the case size. One owner expressed concern about the serviceability of the exclusive L888.4 movement. Overall, owners and reviewers consider the Longines SPIRIT a highly competent and well-executed watch for its price, with its design and finishing being the primary draws.

From video reviewers

The watch features a COSC-certified automatic movement. Reviewers noted the excellent finishing on the case and applied numerals. The lume brightness was cited as a weakness.

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.