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Observational Research Stopwatch
Observational Research Stopwatch
Observational Research Stopwatch
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Observational Research Stopwatch

Marsoni M251S
Sale price$49.95
Pay 4 payments of $12.49 a month.Shop Pay
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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  • 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]
  • Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 984 reviews
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Product Reviews
S
Verified Purchase
Sirasa
Boise, US
★★★★★ 3
Solid colors fit, patterned ones too small
As others have said, the blue socks with flower pattern were much smaller than the solid blue pairs- so small I couldn’t even get it on my foot (shoe size 8). The solid blue pairs I like and still wear, but it’s a bummer to only have 2 out of 3 fit when they cost this much.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2025
H
Verified Purchase
Harley
Lowell, US
★★★★★ 5
Perfect for my needs
Size matches my feet. Good enough quality. Comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
N
Verified Purchase
N
Port Orchard, US
★★★★★ 4
Comfortable toeless socks
Very soft and comfortable. However, the elastic is too tight. Should be wider so circulation is not cut and you are able to wear it at night. Therefore, is not good for diabetic and heavier people. Larger sizes should be available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
T
Verified Purchase
TW
Birmingham, US
★★★★★ 1
Terrible Quality, fell apart
Very poor quality. Came apart after one washing. Unraveled. Would not purchase again. Wish I had not purchases the first time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
K
Verified Purchase
Kindle Customer
Belleville, US
★★★★★ 3
Socks
They fit okay and they're comfortable but the only problem I've been seeing is that they're starting to unravel at the toe end
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 1, 2025

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