Side by side
Borealis Watch Co. Caloura 300mvsCitizen Eco-Drive One
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
The bottom line
The 36.6mm Eco-Drive One wears 5.4mm narrower than the 42mm Caloura 300m — that's a meaningful jump on most wrists.
Check prices & track
Borealis Watch Co. Caloura 300m
MSRP $275
Citizen Eco-Drive One
MSRP $2,995
At a glance
11 of 29 specs differDiameter
Caloura 300m42mm
Eco-Drive One36.6mm
Power Reserve
Caloura 300m40h
Eco-Drive One40h
Water Resistance
Caloura 300m300m
Eco-Drive One300m
MSRP
Caloura 300m$275
Eco-Drive One$2,995
Full specifications
Case
5 specsCategory
Diver
Dress
Diameter
42mm
36.6mm
Thickness
13.9mm
12mm
Lug-to-Lug
44.20mm
46mm
Lug Width
22mm
20mm
Crystal & Dial
3 specsAR Coating
Inner
Underside
Dial Color
Black
White
Lume
BGW9
None
Movement
2 specsCaliber
NH35
8845
Type
Automatic
Solar
Pricing
1 specsMSRP
$275
$2,995
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