Be smart, stay dumb.

Back to the sheet Sports & Outdoors Training log · E4
Casio HS-3V stopwatch
E4 · Level 2 · A quiet chip Dependable doofus

Casio HS-3V stopwatch

Casio HS-3V handheld stopwatch.

$45Buy on Amazon
Amazon US, October 2026. Prices change.

The coach’s stopwatch: big buttons, laps and splits to a hundredth of a second, solar-assisted battery. It times, and that is all.

Off-grid
Runs on battery, crank or solar, so it survives a power cut.
Calm
Does not compete for your attention: no notifications, feeds or endless content. Does its job and gets out of the way.

Where to buy

Some links earn us a small commission. It never changes the order.

Survival checklist

What it survives, next to the smart one it replaces.
1
=SURVIVES(threat)Survives…
ThisCasio HS-3V stopwatch
What it replacesSmart oneOura Ring 5
2
Power cut
TRUE
FALSE
3
Wi-Fi goes down
TRUE
FALSE
4
The company switches off its servers
TRUE
FALSE
5
Someone tries to hack it
TRUE
FALSE
6
A firmware update goes wrong
TRUE
FALSE
7
Twenty years from now
#DEPENDS
FALSE
8
=COUNTIF(TRUE)Total
5 of 65/6and one maybe
0 of 60/6

The smart one is the Oura Ring 5.

Row 4

See it in the sheetIn the sheet
#N/A

We looked. Sorry.

Electric and brainless? That would be a treadmill.

You are here

Start, stop, lap. Silent otherwise.

Casio HS-3V stopwatch

$45
Off-grid · Calm
Casio HS-3V stopwatch$45
Buy on Amazon