Which is cheaper, the Oblvlo BLM Rotor or the Sheffield 1A 40mm?

At MSRP the Sheffield 1A 40mm is the cheaper of the two at $228, against $322 for the Oblvlo BLM Rotor — a $94 gap before any retailer discounting.

Which is bigger, the Oblvlo BLM Rotor or the Sheffield 1A 40mm?

The Oblvlo BLM Rotor wears larger at 41mm versus 40mm for the Sheffield 1A 40mm — a 1mm difference across the dial.

Which has better water resistance, the Oblvlo BLM Rotor or the Sheffield 1A 40mm?

The Sheffield 1A 40mm is rated to 200m versus 50m for the Oblvlo BLM Rotor.

Which has a longer power reserve, the Oblvlo BLM Rotor or the Sheffield 1A 40mm?

The Oblvlo BLM Rotor carries a 48-hour power reserve against 40 hours on the Sheffield 1A 40mm.

Side by side

Oblvlo BLM RotorvsSheffield 1A 40mm

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

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Oblvlo BLM Rotor

BLM-ROTOR

MSRP $322

Sheffield 1A 40mm

allsport-1-auto

MSRP $228

At a glance

10 of 29 specs differ

Diameter

BLM Rotor41mm

1A 40mm40mm

Power Reserve

BLM Rotor48h

1A 40mm40h

Water Resistance

BLM Rotor50m

1A 40mm200m

MSRP

BLM Rotor$322

1A 40mm$228

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

Black

—

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

—

Seiko NH35

Power Reserve

48h

40h

Pricing

1 specs

MSRP

$322

$228

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Oblvlo BLM RotorvsSheffield 1A 40mm

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