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⏳ Time waits for no one—own precision that keeps you ahead!
The Casio HS-80TW-1EF is a unisex quartz stopwatch featuring ultra-precise 1/1000 second timing, a referee mode for seamless game time tracking, and a reliable daily alarm. Its automatic calendar keeps the date accurate without manual input. Praised for its durability and trusted by professional coaches, this lightweight, black-strap stopwatch combines rugged build quality with essential timing functions to elevate your performance and time management.


| ASIN | B001JJ8ZLC |
| Best Sellers Rank | 117,113 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 157 in Stopwatches |
| Brand Name | Casio |
| Colour | Black |
| Country Of Origin | China |
| Country of origin | China |
| Customer Reviews | 4.5 out of 5 stars 786 Reviews |
| Item Dimensions D x W x H | 5.5D x 11.7W x 9H centimetres |
| Item Part Number | HS-80TW-1EF |
| Item Type Name | Clock |
| Item Weight | 82 Grams |
| Manufacturer | Casio |
| Manufacturer Part Number | HS-80TW-1EF |
| Manufacturer Warranty Description | 2 years manufacturers warranty. |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | HS-80TW-1EF |
| Number of settings | 3 |
| Screen Size | 4.61 Inches |
| Unit Count | 1.0 count |
D**C
It doesn't fall apart!
I'm a National level swim coach, which means my stopwatches get used 20hrs+ per week. That's a lot of abuse, and most watches these days don't seem capable of standing up to that. The Fast-time range (or their manufacturer) are notorious for buttons falling off or becoming over-sensitive and registering multiple splits in one press! So I was looking around for a watch from a different manufacturer (the casing style gives it away - most brands share the same manufacturer as the one mentioned above) and stumbled across this one on Amazon. Extremely well made, feels robust, and after the first 4 months of (ab)use shows no sign of wear (so I bought a 2nd one). I have around 15 watches in my bag (and another 10 that have fallen apart in recent years), these 2 Casios and a decade old Quantum are the only ones still functioning properly. Some novel features too ... Being able to set a sequence of countdown timers is useful and totally unique among the watches I've seen. It allows you to set up to 10 timers to countdown one after the other. Useful for sets with descending rest intervals. Unfortunately, just like on every other watch, no manufacturer has yet realised how useful it would be to show the running time alongside the countdown time - preferring instead to show time of day (neither use nor ornament). Shouting out athlete's swim times every 5sec is pretty tough when you have to calculate them from the countdown display. Kudos to Casio for being able to increase and decrease timer settings though (press left to decrease, right to increase), that saves time when you carelessly fly past the setting you want and have to scroll all the way round again. Also little things like scrolling through splits backwards and forwards just by pressing the other button. It also lets you choose to show stopwatch times as splits (overall time) or laps (time since last split), although some other watches do it slightly better by showing you both on the screen together - that would have made this watch almost perfect Casio! Absolutely no idea why it gives times to the 1/1000sec though - gimmicky! It's a handheld stopwatch Casio, no one's finger is that accurate! Unfortunately, that just gets confusing in the heat of action. Overall it appears to be an excellent, well made, watch. Here's hoping it stands the test of time (unlike most other stopwatches on the market today) - so far so good. **Update after 3 years** I eventually bought 4 of these and all are still working perfectly despite throwing them around a lot (no battery change yet either). However, the strap is a bit of a problem. It's a unique rubber ring attachment which deteriorates after a while and will snap. Easily replaced of course, but an odd design choice by Casio. **Update after 5 years** Thought this deserved an update after 5 years - no battery change required yet, but due any time now I guess. Of the 6 I have, 1 of the 5 year old watches has froze a few weeks ago. After 5 years of abuse though, that's pretty special. The rest are still like new :-) Just bought another 4 for a junior coach. **Update after 8 years** Yep, I'm back for two more. Out of 6 purchased, 2 have conked out over the years - completely dead screen even after a battery change. After the abuse they get though, still having 4 going strong is outstanding, I've never had watches last this long. Other than the silly strap and lack of stroke rate functionality (easily worked around) these are pretty much perfect.
L**Y
Excellent piece of kit!
I am a swimming coach and have had my fair share of various stopwatches. This piece is very well made and comes packed with most features you would need (it doesn't calculate a stroke rate, but you can do it yourself, so this doesn't bother me). For me the main thing is the robustness and reliability of the device, which are superb. Highly recommended!
I**N
Good price and very sturdy
This stop watch is very sturdily built, it feels like it will survive the roughest handling. The display is set well back so it is pretty well protected from accidental damage. There are more modes than anyone could possibly need but isn't that the case of all gadgets nowadays? The manual isn't the easiest to follow and you won't figure this think out by just pressing buttons unless all you need is a basic start-lap-stop-reset functionality. For that it is the same as any stopwatch I have used. It records down to thousandths of a second, totally silly, nobody has reaction times that good. The result is I have to round to the nearest hundredth of a second when timekeeping a swim gala for example. All in a good stopwatch
R**E
Excellent
First of all, finding a stopwatch seems to be one of life's impossible tasks. I'm currently working towards qualifying as a swimming judge and needed a new stopwatch. Plenty of very cheap stopwatches around, but something of a little "quality" sadly lacking. I stumbled across this on Amazon. Well priced and subsequently ordered. I was delighted when it arrived. Well made, packed full of features and water resistant! Easy to use, with a straight forward lap / split function and recall, this is a quality piece of kit. Well worth paying the extra over the others to be found on Amazon (around the £10.00 mark) as I feel this will last considerably longer. Very pleased with the purchase.
C**E
There is no illumination for the display.
No illumination and no audible beep when pressing buttons. For the cost it should at least have illumination but according to the instructions no. 🫤
A**S
Excellent stopwatch
I have now purchased 8 of these - not all for me - because they are so reliable. I use them when coaching swimming and they are used every day. The ones I bought 3 years ago are still going strong and I have purchased them for younger coaches in my club. They are so robust and I have never had any problems with them. I bought more expensive watches in the past for twice this price and more - all failed miserably(buttons fell off and display went out). If you are thinking about this watch do not hesitate- you will not be disappointed.
R**B
Clear display, intuitive to use. Two sets of memories can be handy
I have owned and used a number of watches for swimming coaching and I keep coming back to this one. It's the most intuitive to use (ie. it doesn't do weird things that you have to work around like the Finis watch). Having two banks of memories is handy when you need to recall a previous race when you are timing another one (most of the others have a single bank). I've used the counter function as well. No idea if the football function is helpful if that's your thing. All it lacks for swimming is a stroke rate function.
T**M
Nice product, although the functioning could be made simpler
I bought it for refereeing football games. The football mode is great in theory but in practice it is not that easy to operate. Particularly getting it to stop for half time and then either reset it or continue afterwards. In all other respects it is great, robust, waterproof and very useful
Trustpilot
2 weeks ago
1 week ago