Which is cheaper, the Seiko Prospex SPEEDTIMER or the Unimatic Modello Tre UC3 Classic Chronograph?

At MSRP the Unimatic Modello Tre UC3 Classic Chronograph is the cheaper of the two at $760, against $2,200 for the Seiko Prospex SPEEDTIMER — a $1,440 gap before any retailer discounting.

Which is bigger, the Seiko Prospex SPEEDTIMER or the Unimatic Modello Tre UC3 Classic Chronograph?

The Seiko Prospex SPEEDTIMER wears larger at 42mm versus 41.5mm for the Unimatic Modello Tre UC3 Classic Chronograph — a 0.5mm difference across the dial.

Which has better water resistance, the Seiko Prospex SPEEDTIMER or the Unimatic Modello Tre UC3 Classic Chronograph?

The Unimatic Modello Tre UC3 Classic Chronograph is rated to 300m versus 10m for the Seiko Prospex SPEEDTIMER.

What movement does the Seiko Prospex SPEEDTIMER run compared to the Unimatic Modello Tre UC3 Classic Chronograph?

Both watches run quartz movements — the Seiko Prospex SPEEDTIMER uses the 5X83 and the Unimatic Modello Tre UC3 Classic Chronograph uses the Seiko VK64 (meca-quartz).

Side by side

Seiko Prospex SPEEDTIMERvsUnimatic Modello Tre UC3 Classic Chronograph

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

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Seiko Prospex SPEEDTIMER

MSRP $2,200

See the full Prospex SPEEDTIMER

Unimatic Modello Tre UC3 Classic Chronograph

uc3

MSRP $760

See the full Modello Tre UC3 Classic Chronograph

At a glance

15 of 29 specs differ

Diameter

Prospex SPEEDTIMER42mm

Modello Tre UC3 Classic Chronograph41.5mm

Power Reserve

Prospex SPEEDTIMER—

Modello Tre UC3 Classic Chronograph—

Water Resistance

Prospex SPEEDTIMER100m

Modello Tre UC3 Classic Chronograph300m

MSRP

Prospex SPEEDTIMER$2,200

Modello Tre UC3 Classic Chronograph$760

Full specifications

Case

7 specs

Crystal & Dial

5 specs

Crystal

Sapphire

—

Crystal Shape

Curved

—

AR Coating

Super-clear coating

—

Dial Color

—

Matte black

Lume

LumiBrite on hands and index(es)

None

Movement

2 specs

Caliber

5X83

Seiko VK64 (meca-quartz)

Jewels

Pricing

1 specs

MSRP

$2,200

$760

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Seiko Prospex SPEEDTIMERvsUnimatic Modello Tre UC3 Classic Chronograph

At a glance

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