Which is cheaper, the Hemel Sky Racer Mechanical or the Longines ULTRA‑CHRON CARBON?

At MSRP the Hemel Sky Racer Mechanical is the cheaper of the two at $550, against $5,550 for the Longines ULTRA‑CHRON CARBON — a $5,000 gap before any retailer discounting.

Which has better water resistance, the Hemel Sky Racer Mechanical or the Longines ULTRA‑CHRON CARBON?

The Longines ULTRA‑CHRON CARBON is rated to 300m versus 50m for the Hemel Sky Racer Mechanical.

Which has a longer power reserve, the Hemel Sky Racer Mechanical or the Longines ULTRA‑CHRON CARBON?

The Longines ULTRA‑CHRON CARBON carries a 52-hour power reserve against 40 hours on the Hemel Sky Racer Mechanical.

What movement does the Hemel Sky Racer Mechanical run compared to the Longines ULTRA‑CHRON CARBON?

The Hemel Sky Racer Mechanical runs a manual caliber (Seagull ST19), while the Longines ULTRA‑CHRON CARBON runs a automatic (L836.6).

Side by side

Hemel Sky Racer MechanicalvsLongines ULTRA‑CHRON CARBON

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

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

Longines ULTRA‑CHRON CARBON

L2.839.4.52.2

MSRP $5,550

At a glance

22 of 29 specs differ

Diameter

Sky Racer Mechanical43mm

ULTRA‑CHRON CARBON43mm

Power Reserve

Sky Racer Mechanical40h

ULTRA‑CHRON CARBON52h

Water Resistance

Sky Racer Mechanical50m

ULTRA‑CHRON CARBON300m

MSRP

Sky Racer Mechanical$550

ULTRA‑CHRON CARBON$5,550

Full specifications

Case

7 specs

Crystal & Dial

6 specs

Crystal

Domed Sapphire

Sapphire

Crystal Shape

Flat

—

AR Coating

Inner

Both sides

Dial Color

Black

Silver

Indices

Applied

Applied indexes

Lume

None

Super-LumiNova

Movement

8 specs

Caliber

Seagull ST19

L836.6

Type

Manual

Automatic

Beat Rate

28,800 vph

36,000 vph

Power Reserve

40h

52h

Jewels

Hacking

Yes

Hand-winding

Yes

Complications

None

Hours, minutes, seconds

Pricing

1 specs

MSRP

$550

$5,550

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