Side by side

Aera Instruments M-1vsGrand Seiko SBGW306

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

M-1
Aera InstrumentsM-1
SBGW306
Grand SeikoSBGW306
MSRP $17,900

At a glance

12 of 29 specs differ
Diameter
M-139mm
SBGW30636.5mm
Power Reserve
M-142h
SBGW30672h
Water Resistance
M-1100m
SBGW306100m
MSRP
M-1—
SBGW306$17,900

Full specifications

Case

6 specs
Category
—
Dress
Diameter
39mm
36.5mm
Thickness
13.14mm
11.7mm
Lug-to-Lug
47.6mm
42.7mm
Lug Width
20mm
18mm
Material
Stainless Steel
Gold

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Dune
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW216-1
9S64
Power Reserve
42h
72h

Pricing

1 specs
MSRP
—
$17,900

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