Side by side

Serica Ref. 5303 Diving ChronometervsBell & Ross BR-X5 Iridescent

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
BR-X5 Iridescent
Bell & RossBR-X5 Iridescent
MSRP $9,709

At a glance

18 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
BR-X5 Iridescent41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
BR-X5 Iridescent70 hoursh
Water Resistance
Ref. 5303 Diving Chronometer300m
BR-X5 Iridescent100m
MSRP
Ref. 5303 Diving Chronometer$1,768
BR-X5 Iridescent$9,709

Full specifications

Case

8 specs
Category
Diver
Diameter
39mm
41mm
Thickness
12.2mm
12.8mm
Lug-to-Lug
46.5mm
Lug Width
20mm
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Underside
Dial Color
Enamel Black
White
Indices
Applied
Applied indices

Movement

5 specs
Caliber
M100 COSC
BR-CAL.323
Beat Rate
28,800 vph
Power Reserve
42h
70 hoursh
Jewels
25
Complications
COSC
Hours/Minutes, Seconds, Power Reserve Indicator

Pricing

1 specs
MSRP
$1,768
$9,709

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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.

Bell & Ross BR-X5 Iridescent

The Bell & Ross BR-X5 Iridescent is praised for its vibrant, color-shifting dial that moves between blue, green, and violet hues, achieved through layered PVD coatings over a sunburst texture. Reviewers note the 41mm stainless steel case has a mix of polished and brushed finishes. The BR-CAL.323 automatic movement, manufactured by Kenissi, is COSC-certified and offers a 70-hour power reserve. Some owners find the dial's "epic summer vibe" a bit too flashy and express concern about long-term appeal, with the watch priced at $8,400 on a bracelet. Overall, owners and reviewers highlight the striking iridescent dial as the Bell & Ross BR-X5 Iridescent's defining feature.

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