Side by side
Serket Watch Co Reef MarianavsTudor Black Bay 58 GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
19 of 29 specs differDiameter
Reef Mariana40mm
Black Bay 58 GMT39mm
Power Reserve
Reef Mariana—
Black Bay 58 GMT65h
Water Resistance
Reef Mariana200m
Black Bay 58 GMT200m
MSRP
Reef Mariana$449
Black Bay 58 GMT$5,525
Full specifications
Case
7 specsCategory
—
GMT
Diameter
40mm
39mm
Thickness
13.2mm
12.8mm
Lug-to-Lug
47.5mm
—
Lug Width
20mm
12.8mm
Finish
Brushed and polished
Polished + Satin
Caseback
Solid
Solid screw-down
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
Orange
Black
Lume
BGW9
None
Movement
7 specsCaliber
Seiko NH35
MT5450-U
Beat Rate
28,800 vph
0 vph
Power Reserve
—
65h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT
Pricing
1 specsMSRP
$449
$5,525
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