Side by side

Serica Ref. 5303 Diving ChronometervsTimefactors Royal Navy Diver PRS-82

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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.

Timefactors Royal Navy Diver PRS-82

Owners widely praise the Timefactors Royal Navy Diver PRS-82 for its exceptional case finishing at its price point and substantial bezel clicks. The 40mm sizing, sapphire crystal, and dateless design are frequently highlighted, with many appreciating its comfortable wearability on smaller wrists due to its short lug-to-lug distance and asymmetric case. Some owners note the lume is decent and legible overnight but fades faster than some other brands, and one owner found the hands' lume pip color clashed with the dial lume. The movement's seconds hand exhibits a characteristic "stutter" as observed by one owner. Overall, owners rate the Timefactors Royal Navy Diver PRS-82 highly for its authentic reissue appeal and excellent value.

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Royal Navy Diver PRS-8240mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Royal Navy Diver PRS-82
Water Resistance
Ref. 5303 Diving Chronometer300m
Royal Navy Diver PRS-82300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Royal Navy Diver PRS-82$664

Full specifications

Case

4 specs
Category
Diver
Diameter
39mm
40mm
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
47mm

Crystal & Dial

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

Movement

3 specs
Caliber
M100 COSC
Sellita SW200-1
Power Reserve
42h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$664
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