Side by side

Sartory Billard SB10vsSpinnaker Dumas GMT

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

SB10
Sartory BillardSB10
MSRP $3,800
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

13 of 29 specs differ
Diameter
SB1039.5mm
Dumas GMT44mm
Power Reserve
SB1055h
Dumas GMT40h
Water Resistance
SB1080m
Dumas GMT300m
MSRP
SB10$3,800
Dumas GMT$399

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
39.5mm
44mm
Thickness
11.5mm
15mm
Lug-to-Lug
44.5mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
80m
300m

Crystal & Dial

2 specs
Dial Color
Black
Blue
Lume
Super-LumiNova BGW9
None

Movement

3 specs
Caliber
LJP G100
Seiko NH34A
Power Reserve
55h
40h
Complications
Jumping Hour
None

Pricing

1 specs
MSRP
$3,800
$399

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sartory Billard SB10

The Sartory Billard SB10 features a unique jumping hour and perimeter hour ring design, with functional grater plates that are not practical for actual grating due to a blocked-off side. Owners note the absence of a seconds hand, minute tick marks, and a conventional crystal. On balance, owners appreciate the unique design elements of the Sartory Billard SB10, despite its impractical features.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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