JUNSD

Professional Stopwatch Timer for Sports 100 Lap Stopwatch Digital Sports

Stopwatch
Black
2.6 ounces

4.5/ 5 on Amazon66Amazon ratings100+bought last month3.7ProductDome score

Better rated than 72%

Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou need a dedicated stopwatch that logs up to 100 laps during a session

A basic, lightweight digital stopwatch with 100-lap memory for tracking interval training.

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ProductDome scorecard

How it ranks among the 48 stopwatches we track

3.7/ 5ProductDome scoreMedium confidence

Owner satisfaction · 56% of scorecategory median 4.3★4.4

4.5★ across 66 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 333 ratings2.3

66 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score2.7

100+ bought on Amazon last month.

Data quality · 11% of score2.5

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 48 stopwatches we track - how the scorecard works · full stopwatches data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

A black digital sports stopwatch from JUNSD with 100-lap memory, weighing 0.16 pounds, built for timing intervals and splits during training.

The 100 lap function lets a coach or athlete capture split times across a long session, such as track repeats or swim sets, without resetting the display between reps.

100 lap memory
0.16 pound weight
Digital display
Black finish

Who it's for

Coaches, runners, and swimmers tracking interval splits across a training session. Not for anyone needing a smartphone-connected or app-syncing timer, since none is mentioned.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

Stores up to 100 lap times
Very lightweight at 0.16 pounds

What to check first

No app or data export features mentioned

Performance notes

At 0.16 pounds the stopwatch is light enough to hand off between athletes or clip to a lanyard, and the 100-lap memory is enough for most interval or track workouts without needing to write times down mid-session.

Specifications

Brand	JUNSD
Color	Black
Item Weight	2.6 ounces

How it compares

This product against the closest alternatives we track in stopwatches.

Product	Amazon rating	Ratings	ProductDome score
Professional Stopwatch Timer for Sports 100 Lap Stopwatch Digital SportsThis product	4.5 / 5	66	3.7 / 5
Gymboss BLACKBU StopwatchGymboss	4.5 / 5	5,500	4.3 / 5
ACCUSPLIT 12440191 StopwatchACCUSPLIT	4.5 / 5	3,500	4.3 / 5
Learning Resources Simple 3 Button StopwatchLearning	4.5 / 5	3,000	4.3 / 5
Sports YS-802 StopwatchSports	4.2 / 5	2,000	4.2 / 5

Frequently asked

Questions about the JUNSD stopwatches

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

How many laps can the JUNSD stopwatch record?

Up to 100.

How much does it weigh?

0.16 pounds.

Is it digital or analog?

Digital.