Which is cheaper, the Feynman Timekeepers Coalesce or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

At MSRP the Seiko Prospex SPEEDTIMER Mechanical Chronograph is the cheaper of the two at $2,500, against $5,448 for the Feynman Timekeepers Coalesce — a $2,948 gap before any retailer discounting.

Which is bigger, the Feynman Timekeepers Coalesce or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph wears larger at 42mm versus 39mm for the Feynman Timekeepers Coalesce — a 3mm difference across the dial.

What movement does the Feynman Timekeepers Coalesce run compared to the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

Both watches run automatic movements — the Feynman Timekeepers Coalesce uses the Sellita SW200-1 and the Seiko Prospex SPEEDTIMER Mechanical Chronograph uses the 8R48.

Side by side

Feynman Timekeepers CoalescevsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

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Feynman Timekeepers Coalesce

the-panda

MSRP $5,448

Seiko Prospex SPEEDTIMER Mechanical Chronograph

srq047j1

MSRP $2,500

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At a glance

14 of 29 specs differ

Diameter

Coalesce39mm

Prospex SPEEDTIMER Mechanical Chronograph42mm

Power Reserve

Coalesce—

Prospex SPEEDTIMER Mechanical Chronograph45h

Water Resistance

Coalesce—

Prospex SPEEDTIMER Mechanical Chronograph100m

MSRP

Coalesce$5,448

Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Panda

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Sellita SW200-1

8R48

Power Reserve

—

45h

Jewels

Pricing

1 specs

MSRP

$5,448

$2,500

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Feynman Timekeepers CoalescevsSeiko Prospex SPEEDTIMER Mechanical Chronograph

At a glance

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