Which is cheaper, the Oblvlo JM Rotor or the Sheffield 1A 38?

At MSRP the Sheffield 1A 38 is the cheaper of the two at $238, against $299 for the Oblvlo JM Rotor — a $61 gap before any retailer discounting.

Which is bigger, the Oblvlo JM Rotor or the Sheffield 1A 38?

The Oblvlo JM Rotor wears larger at 42mm versus 38mm for the Sheffield 1A 38 — a 4mm difference across the dial.

Which has better water resistance, the Oblvlo JM Rotor or the Sheffield 1A 38?

The Sheffield 1A 38 is rated to 200m versus 50m for the Oblvlo JM Rotor.

What movement does the Oblvlo JM Rotor run compared to the Sheffield 1A 38?

Both watches run automatic movements — the Oblvlo JM Rotor uses the Miyota 8215 and the Sheffield 1A 38 uses the Seiko NH35.

Side by side

Oblvlo JM RotorvsSheffield 1A 38

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

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Oblvlo JM Rotor

JM-ROTOR

MSRP $299

Sheffield 1A 38

1a-38-blue

MSRP $238

At a glance

9 of 29 specs differ

Diameter

JM Rotor42mm

1A 3838mm

Power Reserve

JM Rotor42h

1A 38—

Water Resistance

JM Rotor50m

1A 38200m

MSRP

JM Rotor$299

1A 38$238

Full specifications

Case

4 specs

Crystal & Dial

1 specs

Dial Color

Black

Blue

Movement

3 specs

Caliber

Miyota 8215

Seiko NH35

Power Reserve

42h

—

Jewels

Pricing

1 specs

MSRP

$299

$238

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Oblvlo JM RotorvsSheffield 1A 38

At a glance

Full specifications

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