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At a glance
17 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Deepsea Challenge50mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Deepsea Challenge70h
Water Resistance
Ref. 5303 Diving Chronometer300m
Deepsea Challenge1,000m
MSRP
Ref. 5303 Diving Chronometer$1,768
Deepsea Challenge$29,100
Full specifications
Case
8 specsDiameter
39mm
50mm
Thickness
12.2mm
9.5mm
Lug-to-Lug
46.5mm
46mm
Lug Width
20mm
—
Material
Stainless Steel
RLX Titanium
Finish
Brushed and polished
RLX titanium
Water Resistance
300m
1000m
Caseback
Solid
Monobloc middle case, screw-down case back and winding crown. Rolex Ringlock system case architecture with nitrogen-alloyed steel ring and helium escape valve
Crystal & Dial
4 specsAR Coating
Yes
—
Dial Color
Enamel Black
Black
Indices
Applied
Index
Lume
Super-LumiNova
Chromalight
Movement
4 specsCaliber
M100 COSC
3230
Power Reserve
42h
70h
Jewels
25
31
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$29,100
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