Side by side
Core Timepieces The River WatchvsFormex Reef 39.5 mm
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
The River Watch42mm
Reef 39.5 mm39.5mm
Power Reserve
The River Watch—
Reef 39.5 mm56h
Water Resistance
The River Watch300m
Reef 39.5 mm300m
MSRP
The River Watch$540
Reef 39.5 mm$2,230
Full specifications
Case
6 specsCategory
—
Diver
Diameter
42mm
39.5mm
Thickness
—
11mm
Lug-to-Lug
—
45.5mm
Lug Width
22mm
22mm
Material
Titanium
Stainless Steel
Crystal & Dial
2 specsDial Color
—
Bahama Blue
Lume
None
Super-LumiNova
Movement
2 specsCaliber
Seiko NH34A
Sellita SW300-1
Power Reserve
—
56h
Pricing
1 specsMSRP
—
$2,230
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Core Timepieces The River Watch vs Formex Reef 39.5 mm gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.













