Side by side
Borealis Watch Co. Caloura 300mvsBoldr The T Rex By Boldr X Nitecore
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Caloura 300m42mm
The T Rex By Boldr X Nitecore40mm
Power Reserve
Caloura 300m40h
The T Rex By Boldr X Nitecore40h
Water Resistance
Caloura 300m300m
The T Rex By Boldr X Nitecore200m
MSRP
Caloura 300m$275
The T Rex By Boldr X Nitecore$499
Full specifications
Case
5 specsDiameter
42mm
40mm
Thickness
13.9mm
12.3mm
Lug-to-Lug
44.20mm
46mm
Lug Width
22mm
20mm
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
Black
T-Rex by BOLDR x Nitecore
Lume
BGW9
Super-LumiNova
Movement
1 specsCaliber
NH35
Seiko NH35A
Pricing
1 specsMSRP
$275
$499
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