Tennis Score Keeper for Racket and Paddle, Tennis Score Counter, Easy-to-Mount Point Tracker for Recording Points, Games, and Sets, Featherweight Score Keeping Device, 2g

This was a present to my son-in-law. I don't know how it's working and can't get info about it, so I'm gonna say that it's working just fine.

I’ve got a Yonex vcore 98 7th gen. The other brand couldn’t adhere well due to the shape of the neck. This score keeper has zip tie attachments that holds the score keeper securely. I also have a vcore 98 6th gen which has a smoother neck and I have no issues just using it without zip ties. This score keeper is cheaper, has zip tie option and works just as well as the more expensive brand

Got these because I was getting frustrated with an opposing team calling the score wrong, now I have a backup to call them out on their cheating.

Overall, I'm pretty happy with this product. It is convenient to have attached to your racket and helps to keep track of the score (yes, you do have to remember to update the score after each point ;)). The buttons mostly stay in place and have a "click" position they sit in. My only complaint is that it can make a slight rattling noise when you hit the ball. I notice it mostly during warmups and is probably only when the buttons are in certain positions. We've tried these on multiple rackets including mounting it on both inside and outside of the frame. I prefer it mounted on the inside as my hand comes in contact with it when mounted on the outside. I also like that it comes with zip ties as I don't think it would stay on without them, especially with the curved contour of the racket frames. The sticky tape helps hold it in place from sliding around but I wouldn't trust it alone without the zip ties.

Easy to adhere to my Babolat tennis racquet, and easy to use. I began using it in practice and then during meets. I got into a routine of moving the buttons after each point and now it’s just part of my routine. Buttons stay in position. I’m buying one for each of my team members.

Doesn’t stay on Wilson clash because of the ridges in the racket. Rattles when tied with zip ties and fell off immediately

This works great, the "buttons" have a nice positive stop feel, aren't too tight, and the contrasting colors make it easy to read at a glance. The zipties came in handy when, my racquet was damaged after using a different brand of this. The zip ties helped it stay in place due to the damage not getting great adhesion. Bonus points, for being able to totally cover up the damaged spot.

It was great but just wish it was a little more sturdy. It broke in the middle of my daughter’s tennis match