Side by side

Massena LAB GeometervsJack Mason Ellum Manual Wind

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Geometer
Massena LABGeometer
MSRP $3,495
Ellum Manual Wind
Jack MasonEllum Manual Wind
MSRP $799

At a glance

12 of 29 specs differ
Diameter
Geometer39mm
Ellum Manual Wind38mm
Power Reserve
Geometer58h
Ellum Manual Wind42h
Water Resistance
Geometer50m
Ellum Manual Wind50m
MSRP
Geometer$3,495
Ellum Manual Wind$799

Full specifications

Case

3 specs
Category
Chronograph
Diameter
39mm
38mm
Lug-to-Lug
46mm
45mm

Crystal & Dial

5 specs
Crystal
Acrylic
Sapphire
Crystal Shape
Domed
Flat
AR Coating
No
Inner
Dial Color
Brown
Lume
Cream
None

Movement

3 specs
Caliber
SW510 BH M Elaboré
Sellita SW210
Power Reserve
58h
42h
Jewels
23
25

Pricing

1 specs
MSRP
$3,495
$799
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