Side by side
Longines ULTRA‑CHRON CARBONvsYema Radiance
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
23 of 29 specs differDiameter
ULTRA‑CHRON CARBON43mm
Radiance30mm
Power Reserve
ULTRA‑CHRON CARBON52h
Radiance40h
Water Resistance
ULTRA‑CHRON CARBON300m
Radiance30m
MSRP
ULTRA‑CHRON CARBON$5,550
Radiance$279
Full specifications
Case
9 specsCategory
Diver
Dress
Diameter
43mm
30mm
Thickness
14mm
6.3mm
Lug-to-Lug
48.9mm
—
Lug Width
22mm
14mm
Material
Titanium
316L Stainless Steel
Finish
—
Brushed and polished
Water Resistance
300m
30m
Caseback
Screw-down case back
Solid
Crystal & Dial
5 specsCrystal Shape
—
Flat
AR Coating
Both sides
Inner
Dial Color
Silver
Black
Indices
Applied indexes
Applied
Lume
Super-LumiNova
None
Movement
8 specsCaliber
L836.6
—
Type
Automatic
Quartz
Beat Rate
36,000 vph
28,800 vph
Power Reserve
52h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes
Complications
Hours, minutes, seconds
None
Pricing
1 specsMSRP
$5,550
$279
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