Side by side
Lum-Tec RPMvsNivada Grenchen F77 Chrono Mecaquartz
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
RPM43mm
F77 Chrono Mecaquartz38mm
Power Reserve
RPM40h
F77 Chrono Mecaquartz40h
Water Resistance
RPM50m
F77 Chrono Mecaquartz100m
MSRP
RPM$495
F77 Chrono Mecaquartz$740
Full specifications
Case
8 specsDiameter
43mm
38mm
Thickness
12.3mm
12.2mm
Lug-to-Lug
41mm
46.2mm
Lug Width
20mm
22mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Brushed + Polished + Satin
Water Resistance
50m
100m
Caseback
Solid
316L Steel Silver
Crystal & Dial
2 specsDial Color
RPM 3
Blue
Lume
None
x1
Movement
2 specsCaliber
—
Seiko VK64
Complications
None
Chronograph
Pricing
1 specsMSRP
$495
$740
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