Which is cheaper, the Helgray Kensington Quartz or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

At MSRP the Helgray Kensington Quartz is the cheaper of the two at $299, against $2,500 for the Seiko Prospex SPEEDTIMER Mechanical Chronograph — a $2,201 gap before any retailer discounting.

Which is bigger, the Helgray Kensington Quartz or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph wears larger at 42mm versus 38mm for the Helgray Kensington Quartz — a 4mm difference across the dial.

Which has better water resistance, the Helgray Kensington Quartz or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Helgray Kensington Quartz is rated to 50m versus 10m for the Seiko Prospex SPEEDTIMER Mechanical Chronograph.

Which has a longer power reserve, the Helgray Kensington Quartz or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph carries a 45-hour power reserve against 40 hours on the Helgray Kensington Quartz.

What movement does the Helgray Kensington Quartz run compared to the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Helgray Kensington Quartz runs a quartz caliber (Miyota GL22), while the Seiko Prospex SPEEDTIMER Mechanical Chronograph runs a automatic (8R48).

Side by side

Helgray Kensington QuartzvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

Helgray Kensington Quartz

kensington

MSRP $299

Seiko Prospex SPEEDTIMER Mechanical Chronograph

srq047j1

MSRP $2,500

At a glance

13 of 29 specs differ

Diameter

Kensington Quartz38mm

Prospex SPEEDTIMER Mechanical Chronograph42mm

Power Reserve

Kensington Quartz40h

Prospex SPEEDTIMER Mechanical Chronograph45h

Water Resistance

Kensington Quartz50m

Prospex SPEEDTIMER Mechanical Chronograph100m

MSRP

Kensington Quartz$299

Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

5 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

Yes

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

Miyota GL22

8R48

Type

Quartz

Automatic

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$299

$2,500

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