Timewheel TWJAXA1 Watch Case Back Opener Tool for Small to Regular Size Watches

4.2 4.2 out of 5 stars 524 ratings
$16.95
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Product details

Material
Metal
Clasp type
Screw Clasp

About this item

  • Open & Close Most SMALL To MEDIUM / REGULAR SIZE Screw Back Waterproof Watch (Case Back Size Up to 35mm in Diameter)
  • THE MAXIMUM JAW OPENING is 33mm (Please refer to ASIN: B00944T13U for a XL version)
  • Includes Four (4) Sets of Interchangeable Metal Chucks: Square, Round, Flat & Knurled, They Guarantee Not Fall Off When Use
  • Knurled Handle Prevents Loosing Your Grip
  • Please Make Sure This Regular Size TWJAXA1 Wrench Is a Right Size Tool For Your Watch. For Any Watch Case Back Diameter Bigger Than 35mm, Please Refer to Our XL Size TWJAXA2 (ASIN: B00944T13U) For Bigger Size Watches.

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Timewheel TWJAXA1 Watch Case Back Opener Tool for Small to Regular Size Watches
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Sold by Timewheel and ships from Amazon Fulfillment.
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 6.89 x 2.8 x 1.14 inches; 8.78 ounces
  • Item model number ‏ : ‎ TWJAXA1
  • Department ‏ : ‎ unisex-adult
  • Date First Available ‏ : ‎ December 21, 2010
  • Manufacturer ‏ : ‎ TIMEWHEEL
  • ASIN ‏ : ‎ B004GYZ6EQ
  • Customer Reviews:
    4.2 4.2 out of 5 stars 524 ratings

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Product Description

This is a quality TIMEWHEEL Brand JAXA type waterproof watch case opener wrench is custom manufactured with UPGRADED materials and finishing (please refer to pictures above for product detail). This useful wrench will open and close most small to regular size waterproof watches with screw case back size up to 35mm in diameter. The wrench includes 4 sets of interchangeable metal chucks: Square, Round, Flat and Knurled. These chucks are well designed and quality made, they will not fall off when use. This is a must have tool for watch lovers and watch collectors. We also carry this same JAXA wrench in larger size designed for extra large watch case up to 55mm, please refer to Amazon ASIN: B00944T13U for product detail. Exclusively by Timewheel.

Product specifications

Jewelry Information
Brand, Seller, or Collection Name Timewheel
Material Metal
Clasp Screw Clasp
Model number TWJAXA1
Model Year 2019

Customer reviews

4.2 out of 5 stars
4.2 out of 5
524 global ratings

Customers say

Customers like the quality, performance, and adjustability of the wrench. For example, they mention it's well built, works well, and is easy to adjust to fit a variety of watches. That said, opinions are mixed on ease of use, fit, and ease of opening.

AI-generated from the text of customer reviews

211 customers mention184 positive27 negative

Customers like the quality of the wrench. They say it's well built, solid, and impressive. They also appreciate the heavy all-metal construction and knurled handle. Overall, customers say it’s a great tool that's worth the price.

"...but once you start using it, you can immediately tell its a well built tool. The threaded rods are tight, with very little slop...." Read more

"...all the difference and as this was the highest rated one at a reasonable price this was the one i selected. This tool will come in handy...." Read more

"...So that is 3 x 4.the tool itself seems well made. Nice and oily, like good tools should be...." Read more

"...Nothing worked. Don't waste your time, buy this tool. It's worth the price...." Read more

176 customers mention163 positive13 negative

Customers like the performance of the wrench. They say it works well, is solidly built, and easy to use. Some mention that it works perfectly on their Seiko titanium watch. Overall, most are satisfied with the tool's performance and recommend it to others.

"...It functions perfectly once you know how to adjust it properly." Read more

"...Sure enough, when I used it on two watches, it worked great and I did not scratch the backs!..." Read more

"...It's worth the price. It gives you good leverage for unscrewing the back, which you can't get with anything else...." Read more

"...The tool works fine. The four sets of tips were fine; they fit in the wrench properly and don't fall out. The wrench is solid and works smoothly...." Read more

29 customers mention26 positive3 negative

Customers like the adjustability of the wrench. They say it's easy to adjust for the watch diameter, with enough bits to fit a variety of watches. They also say the adjustments are not loose like similar tools. The brushed steel finish and all parts fit very well. The gearing is tight for accurate adjustments. The ability to adjust the lower pin independently allows it to just fit. However, some customers report a lack of instructions.

"...~ Obviously adjustable to fit a variety of watches. This DID NOT fit my larger Nixon Chronicle, but I should have known that when I bought it...." Read more

"The price is excellent, and the product gives a lot of variations to allow the removal of a watch back...." Read more

"...good size and bulk to make using it simple- multiple bits for different recess sizes.Cons- lack of instructions..." Read more

"...Fortunately the ability to adjust the lower pin independently allowed it to just fit. I would recommend measuring the case BEFORE ordering!..." Read more

27 customers mention24 positive3 negative

Customers like the tools. They mention it's a good quality tool, precise, and well-equipped. Some say it'll be a great addition to their toolbox and useful for watch repair.

"...The knurling on the handle is clean and well done...." Read more

"...I can totally recommend this wrench: decent tool, good price...." Read more

"...Of same type openers, mechanism is much more precise and less wobbly. Used only two of the pegs since the third one made the unit slip...." Read more

"...It is a very precise instrument indeed." Read more

18 customers mention18 positive0 negative

Customers find the wrench to be a great value. They say it saves time and money for changing watch batteries. Some customers also mention that the wrench is the perfect tool to change batteries on all their watches.

"...I was able to change the battery...." Read more

"now I can easily change batteries on all my watches and my friends watches to ....its a little awkward at first but that is because I didnt know how..." Read more

"...It saves time and money by not having to visit a jeweler to change a battery. It's very good quality and easy to use." Read more

"...Saves time and money for changing watch batteries" Read more

111 customers mention60 positive51 negative

Customers are mixed about the ease of use of the wrench. Some mention it's easy to use, with no instructions necessary. They appreciate the watch holder that makes it easy to hold the watch while turning the back cover off. However, some say that there are no instructions included with the wrench and it takes a little getting used to.

"...It has a nice weight to it, is easy to use and opens wide enough to get the back off my fairly wide-faced watch...." Read more

"...Cons:~ no instructions. Its not rocket science to use, but one sheet of information would take a lot of the guess work out of it..." Read more

"...type, it is however worth the time and effort as it greatly reduces the risk of slipping when trying to turn off the back cover of the watch...." Read more

"...There aren't any instructions provided, so here goes. Choose three of the adapters and twist and push them into the holders on the tool...." Read more

47 customers mention16 positive31 negative

Customers are mixed about the fit of the wrench. Some mention that it fits small and medium size watches, while others say that it does not fit well on larger watches.

"...This DID NOT fit my larger Nixon Chronicle, but I should have known that when I bought it...." Read more

"...Pros:- good size and bulk to make using it simple- multiple bits for different recess sizes.Cons-..." Read more

"...The tools were cheap and the two-prong wrench barely fit my watch and was too hard to use without slipping...." Read more

"...It does NOT fit the largest backs. Make sure to check your watches. I ended up with only one that was too large...." Read more

22 customers mention12 positive10 negative

Customers have mixed opinions about the ease of opening the watch. Some say that the tool makes opening the back of the watch easy and safely, while others say that it won't open big watches and the jaws don't wide enough.

"...This tool makes the opening of the back's verify simple. Different size 'bits' give you the flexibility to work with various needs...." Read more

"...However, one of my watches has a 4cm diameter and this tool doesn't open wide enough to engage it (minus 1 star), but you still can use only 2 pins..." Read more

"...I used only 2 of the pins instead of 3, and I had no trouble opening the watch back...." Read more

"...The two top prongs not wide enough to fit on my Pulsar watch. I have yet to try it on smaller watches." Read more

Gets the job done but not a professional quality tool
3 Stars
Gets the job done but not a professional quality tool
New out of the box (as I was oiling the threads for the thumbwheel screws) one of the bolts fell off. I looks like a manufacturing defect on the bolt threads; expected as this is manufactured in China where they have zero quality control. Once I re-attached the screw using Loctite the tool worked to remove the cover from my watch. I think this tool is fine for an amateur like me but for a professional jeweler or watch specialist I would spend the extra money on a higher quality tool.
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Top reviews from the United States

Sal Fanale
5.0 out of 5 stars Great tool for the price. Will pay for itself the first time you change a battery yourself!
Reviewed in the United States on June 30, 2015
Verified Purchase
For the price I found this to be a GREAT TOOL. A lot of people have commented about how tricky it can be to set up the wrench and then use it. Here is my technique:

1) If your watch is a metal band and you have the tools, open the band up so you can have easy, unobstructed access to the back of the watch. It will make the following steps way easier and help reduce the chance of you slipping and gouging the back/case/band.
2) Once you have determined which tip shape you need to use, mount all three tips in the tool
3) Dial the handle so that the lower tip is spaced wider than you will need. That means lower on the tool, more towards the handle. You want the lower tip out of the way while you size the upper two.
4) While holding the tool over the back, start dialing the thumb wheel until you can get the top two tips to line up with their respective notches. Since the lower tip was dialed out of the way, you should be able to nest the top two tips fairly easily and accurately.
5) Now, with the top two tips seated snugly, start dialing the handle to move the lower tip in. You should have a fairly easy time aligning it since the other two tips are already seated. This third tip is what is going to lock it all together--keep dialing until it seats cleanly into position.
6) You should be good to go, so carefully turn the watch back off. If all three tips were well seated properly, you shouldn't have much trouble opening the watch. If you feel like the wrench is slipping out the notches, you are either using the wrong tip shapes or you did not fully seat the tips into the notches when you adjusted the size in steps 4 and 5.

Pros:
~ Well built and solid construction using good quality metals. The weight of the wrench is the first giveaway of its quality, but once you start using it, you can immediately tell its a well built tool. The threaded rods are tight, with very little slop. The metal has a clean even finish. The knurling on the handle is clean and well done. For $15 I really expected this to be a throwaway tool, but I was pleasantly surprised with the overall quality.
~ comes with a variety of tips for various watch types
~ Obviously adjustable to fit a variety of watches. This DID NOT fit my larger Nixon Chronicle, but I should have known that when I bought it. I later purchased the XL version which sizes down small enough to fit all my watches, big and small.

Cons:
~ no instructions. Its not rocket science to use, but one sheet of information would take a lot of the guess work out of it
~ I hate the plastic holder the tool and tips came in. I would have preferred a foam insert like the XL tool comes with, but that's my arbitrary opinion.

Summary:
Note that if your watch is larger, anything bigger than 35mm, buy the XL wrench instead. Its the exact same tool, but larger. Since the XL sizes for 17-55mm, it will cover all the same watches as this one, PLUS larger watches. Otherwise if you only have small watches, for the price, this is a great tool. It functions perfectly once you know how to adjust it properly.
2 people found this helpful
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DisplacedMic
5.0 out of 5 stars Got the job done!
Reviewed in the United States on October 14, 2011
Verified Purchase
I received a watch from my Uncle as a gift. It was a few links too big so I put it in a drawer meaning to take it to a jeweler for a resizing. That was 4 years ago. So after finding it again recently I decided to start wearing the watch. Not wanting to pay someone to do a simple resizing job I bought a cheap little link removal tool from amazon and did the sizing myself. Then the battery died, so I bought a $20 watch repair kit - it was garbage. The tools were cheap and the two-prong wrench barely fit my watch and was too hard to use without slipping. Those backs are often on quite tight, so if you have a slip while trying to get it off the risk if a big scratch or gauge in the back of your watch is quite high.

So I broke down and bought this tool which is, of course, what I should have done from the beginning. First of all, the 3-tooth wrench makes all the difference. No slips, no scratches, no problems.

The wrench itself comes in a nice-enough cardboard storage box with 4 different sets of teeth that should cover most, if not all, of the different types of grooves in waterproof watch backings. It has a nice weight to it, is easy to use and opens wide enough to get the back off my fairly wide-faced watch.

I'm not a watch expert but for what it's worth, even if you don't select this particular tool, my advice would be to avoid the 2 prong wrenches altogether as they are more prone to slippage - a 2 prong isn't much better than a pair of needle-nose pliers in my opinion. A three-prong wrench made all the difference and as this was the highest rated one at a reasonable price this was the one i selected. This tool will come in handy.

Very happy with my purchase!
96 people found this helpful
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N. Hyland
4.0 out of 5 stars I am not a watch expert but, this seems like a fine tool
Reviewed in the United States on May 9, 2014
Verified Purchase
The tool comes with 4 different tips. Two squares (most watches with screw back) and two of another sort I have never seen. So that is 3 x 4.
the tool itself seems well made. Nice and oily, like good tools should be.
It does take some skill to know how to use it or you will scratch the back of the watch. That is why I bought one. After seeing teens and retail workers and even jewelers! totally damage the backs of my nice watches because they lack hand to eye coordination and skills - I decided to take the job into my own hands (so to speak). While I am not a brain surgeon, my profession is one that require microscopic attention to detail.
Sure enough, when I used it on two watches, it worked great and I did not scratch the backs!
The only thing to be aware of is if you have one of those large dial trendy watches. This is made for women's up to big mens watches (like a Wenger Swiss Army or similar O ring sealed watches. For the even bigger sizes (mostly for men), you need the bigger model they also sell here.
I would have given more stars if it came with a better case than a cheap cardboard box. Not wood or fancy, just longer lasting than cardboard or cheap vinyl soft plastic.
One person found this helpful
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Eddie
5.0 out of 5 stars Works Great !!!
Reviewed in the United States on June 18, 2014
Verified Purchase
Had a swiss army watch sitting in a drawer forever. With this tool the fix was easy. I tried to remove the back using different things I had around the house. Nothing worked. Don't waste your time, buy this tool. It's worth the price. It gives you good leverage for unscrewing the back, which you can't get with anything else. There aren't any instructions provided, so here goes. Choose three of the adapters and twist and push them into the holders on the tool. Once they are seated, you have to adjust the distance between them to fit your particular watch. For the two at the head of the tool, just rotate the wheel that is between the holders until they will fit your watch. Now, to adjust the third one (one closest to the handle) just rotate the handle either clockwise or counter clockwise until all three adapters match your watch. Then it is a simple matter of turning the entire tool counter clockwise to remove the back. This is a solid metal tool. I wouldn't buy anything plastic because it takes a bit of force to unscrew the back and most of the pressure is on the little adapters. They need to be strong and they are with this tool.
One person found this helpful
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