


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
Quick Dispatch:
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
Order Tracking:
You'll receive a tracking link by email once your Observational Research Stopwatch ships.
Need Help?
Questions about Observational Research Stopwatch, sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Observational Research Stopwatch in your area.
Get Shipping Estimates
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
You may also like
4.1 ★★★★★
Based on 2148 reviews
Sort
Product Reviews
★★★★★ 5
Gan power works exactly as it should A+
Color: Black, Size: 6FT
These are exactly what I needed & are working absolutely amazingly. Still very early in life span but will post an update
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
★★★★★ 5
Does what I needed it to do
Size: 50mm/2inch, Color: Black, Number of Items: 4
Worked perfectly for routing all my wires for my desk. The included tie straps were an added bonus. Now everything is nice, tidy and secured to the back side of my rolling desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Great value
Size: 50mm/2inch, Color: Black, Number of Items: 2
Great price. Worked perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
★★★★★ 5
Great to clean up the cable clutter
Size: 50mm/2inch, Color: Black, Number of Items: 4
I finally got around to cleaning up the cable disaster on my home office desk and these grommets were exactly what I needed. They fit perfectly into the 2-inch holes I drilled, and the plastic feels surprisingly sturdy, not like that cheap, brittle stuff that snaps the moment you try to pop the cover back on. The little brush-like opening is a nice touch because it keeps the cords from sliding back down when they aren't plugged in, and the black finish looks really clean against my wood tabletop. For a 4-pack, the price was a total steal, and it honestly makes the whole setup look way more professional than just having raw holes in the desk. If humans are looking for a quick and cheap way to hide cord clutter, these are a solid bet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
★★★★★ 5
Great product
Size: 50mm/2inch, Color: Black, Number of Items: 4
Works as described. Love that it came with a hole drill bit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026