Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Timing Tools
Origin	-
Brand	Shanghai Sasey
Model Numbers	504, 505, 803, 806
Mechanism Type	Mechanical Wind-up
Display Type	Analog Dial
Primary Use	Professional Sports Timing
Case Material	Durable Metal Alloy
Stopwatch Resolution	1/5 Second Increments
Reset Function	Instant Flyback Reset
Origin	Shanghai, China
Warranty	1 Year Manufacturer Warranty

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Nostalgic and Functional

Love the retro aesthetic of this timer. It works exactly as described. The winding mechanism is satisfying to use, and the timer keeps accurate time throughout long training sessions.

Anonymous

Mar 23, 2026

Rating: 4/5

Great build quality, steep learning curve

The construction is solid and feels very professional in hand. However, if you are used to digital timers, the analog dial takes some getting used to for reading split times quickly. Once you practice, it works flawlessly.

Anonymous

Mar 21, 2026

Rating: 5/5

Best value for mechanical timing

Bought the model 806 for swimming practice. The flyback reset is smooth and responsive. It's refreshing to use a tool that doesn't rely on electronics. Highly recommended for any serious coach.

Anonymous

Mar 19, 2026

Rating: 5/5

Reliable Classic for Track Events

I have used these Sasey stopwatches for my high school track team for years. They are incredibly durable and the mechanical movement means I never have to worry about batteries dying mid-meet. The 1/5 second resolution is perfect for our needs.

Anonymous

Mar 15, 2026

Rating: 4/5

Solid performer

Does exactly what it is supposed to do. The only reason I didn't give 5 stars is that the instruction manual was a bit vague on how to properly wind it without over-tightening, but common sense prevailed.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for PE Classes

I bought three of these for our physical education department. They are robust enough to handle being dropped on the gym floor and still keep ticking. Great purchase for schools.

5 FAQ

Q: What is the difference between the 504 and the 806 models?

A: The primary differences lie in the case design and button placement. The 504 is a classic round design, while the 806 often features a slightly more ergonomic grip for extended holding, but the internal timing mechanism is similar.

Q: Do these stopwatches require batteries to operate?

A: No, the Shanghai Sasey models 504, 505, 803, and 806 are fully mechanical and operate via a wind-up spring mechanism. No batteries are needed.

Q: Is there a warranty included with this product?

A: Yes, all new Shanghai Sasey mechanical stopwatches come with a standard 1-year manufacturer warranty covering defects in materials and workmanship.

Q: How often do I need to wind the stopwatch?

A: For optimal accuracy and power reserve, we recommend winding the stopwatch fully once every 24 hours if used daily. Do not force the winder once resistance is felt.

Q: Can this timer measure split times?

A: Yes, these professional analog timers allow you to stop the hand to read a time while the internal mechanism continues running, effectively allowing for split time measurement before resetting the hand to zero.

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