★★★★★ 5
everything ok
Size: Large, Color: Black/Black/Black
everything ok
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
Observational Research Stopwatch
Marsoni
M251S
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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Your Observational Research Stopwatch orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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Based on 1613 reviews
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Product Reviews
★★★★★ 5
Always soft
Size: Medium, Color: Black/Black/Black
Good fit, fast shipping. Love a new sock
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Size
Size: Medium, Color: Black/Black/Black
Fit true to size
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Awesome socks
Excellent socks. Very thick and comfortable
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Reviewed in the United States on January 30, 2026
★★★★★ 5
Nice socks.
Comfortable socks: who could ask for anything more? They seem to be of a nice quality, but I buy socks often so there's a rotation going on. A little pricey, but ankle socks always have that sporty look. Fit well, but kind of thin, which isn't a deal breaker.
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Reviewed in the United States on March 2, 2025
