Side by side

Serica Ref. 5303 Diving ChronometervsLongines LEGEND DIVER 59

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
LEGEND DIVER 59
LonginesLEGEND DIVER 59
MSRP $4,100

At a glance

18 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
LEGEND DIVER 5942mm
Power Reserve
Ref. 5303 Diving Chronometer42h
LEGEND DIVER 5972h
Water Resistance
Ref. 5303 Diving Chronometer300m
LEGEND DIVER 59300m
MSRP
Ref. 5303 Diving Chronometer$1,768
LEGEND DIVER 59$4,100

Full specifications

Case

6 specs
Diameter
39mm
42mm
Thickness
12.2mm
12.85mm
Lug-to-Lug
46.5mm
50.1mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Caseback
Solid
Screw-down case back

Crystal & Dial

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

Movement

7 specs
Caliber
M100 COSC
L888.6
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

Pricing

1 specs
MSRP
$1,768
$4,100

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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.

Longines LEGEND DIVER 59

The Longines LEGEND DIVER 59 is widely praised for its warm colors and the 42mm no-date configuration, with owners appreciating its comfortable and versatile wearability. Reviewers highlight the matte black grained-texture dial and sandblasted hands, noting the COSC-certified L888.6 caliber offers a 72-hour power reserve, all at a $4,100 price point. Opinions on bracelet comfort vary, with some finding it bulky on smaller wrists while others prefer it over the mesh option. Overall, owners and reviewers consider the Longines LEGEND DIVER 59 a great release that preserves the model's identity.

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