Observational Research Stopwatch

Marsoni

M251S

$49.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Observational Research StopwatchA unique stopwatch which allows the timing of a subject without disturbing it. For captive and field research, or in classrooms. Hands free operation allows for freedom of movement. The alarm is audible only through a headphone. The alarm can be set for repetitive intervals of every 0. 25 second to every hour. Two 1 100th second displays. Counts up or down to 10 hours. Ideal for multiple and simultaneous processes. In stopwatch mode, current lap time

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I've noticed I was in a brain fog for a few months so I decided to give this a try. On the very first day I noticed a difference of being a little less foggy. I took them around 8am & by about 10am I noticed a difference but it didn't last all day. By 8pm I was back to being foggy. Hopefully over time this will build up in my system & the unfogginess will last all day. Will update when the bottle is gone.

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Reviewed in the United States on April 10, 2026