Which is cheaper, the Sinn 105 St Sa UTC or the Hemel Sky Racer Mechanical?

At MSRP the Hemel Sky Racer Mechanical is the cheaper of the two at $550, against $1,998 for the Sinn 105 St Sa UTC — a $1,448 gap before any retailer discounting.

Which is bigger, the Sinn 105 St Sa UTC or the Hemel Sky Racer Mechanical?

The Hemel Sky Racer Mechanical wears larger at 43mm versus 41mm for the Sinn 105 St Sa UTC — a 2mm difference across the dial.

Which has better water resistance, the Sinn 105 St Sa UTC or the Hemel Sky Racer Mechanical?

The Sinn 105 St Sa UTC is rated to 200m versus 50m for the Hemel Sky Racer Mechanical.

Which has a longer power reserve, the Sinn 105 St Sa UTC or the Hemel Sky Racer Mechanical?

The Hemel Sky Racer Mechanical carries a 40-hour power reserve against 38 hours on the Sinn 105 St Sa UTC.

What movement does the Sinn 105 St Sa UTC run compared to the Hemel Sky Racer Mechanical?

The Sinn 105 St Sa UTC runs a automatic caliber (SW 330-2), while the Hemel Sky Racer Mechanical runs a manual (Seagull ST19).

Side by side

Sinn 105 St Sa UTCvsHemel Sky Racer Mechanical

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

Sinn 105 St Sa UTC

105 St Sa UTC

MSRP $1,998

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

At a glance

18 of 29 specs differ

Diameter

105 St Sa UTC41mm

Sky Racer Mechanical43mm

Power Reserve

105 St Sa UTC38h

Sky Racer Mechanical40h

Water Resistance

105 St Sa UTC200m

Sky Racer Mechanical50m

MSRP

105 St Sa UTC$1,998

Sky Racer Mechanical$550

Full specifications

Case

8 specs

Crystal & Dial

5 specs

Crystal

Sapphire

Domed Sapphire

Crystal Shape

—

Flat

AR Coating

Underside

Inner

Indices

—

Applied

Lume

Luminescent

None

Movement

4 specs

Caliber

SW 330-2

Seagull ST19

Type

Automatic

Manual

Power Reserve

38h

40h

Complications

Date, GMT

None

Pricing

1 specs

MSRP

$1,998

$550

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Sinn 105 St Sa UTCvsHemel Sky Racer Mechanical

At a glance

Full specifications

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