Excerpt from Amazon You can see how to use it on YouTube. I opened it to check the operation, but it's unused. It's been a little over two years since I got it. It has small scratches from when it was opened. The battery is expired, but I tried turning it on and it worked. Please replace it with a new one. [Timer function equipped] *The included battery is for operational testing, so please prepare a new alkaline 9V battery. (Operational test manganese 9V battery included) ・A timer function has finally been added to the table tennis target! A shock sensor is installed inside the product, and the numbers are counted when the ball hits the target. Furthermore, it is equipped with a timer function, making it a new sensation of "target practice that allows you to improve while playing." [Two modes equipped] ・There are two ways to play (modes), and both adults and children will be absorbed in it! Mode ① Count Up: This mode is about how many times you can hit the target within the set time. Mode ② Count Down: This mode is about how many seconds it takes to hit the set number of times. [Improve your skills while having fun!?] ・Developed with the concept of "improving skills while having fun"! It is a product that allows you to improve your skills while enjoying it like a game. The compact design makes it easy to carry! You can enjoy it from one person to a large group. [Many ways to use it!] ・Of course, for table tennis, it is also recommended for infants and the elderly, and it is said to be ideal for "brain training" and "rehabilitation," such as rolling the ball and hitting it, or throwing and hitting it. *However, if you hit it with a ball that is too large or has a lot of weight, there is a risk of damage, so we recommend soft and light colored balls. [Easy to use] ・It is easy to operate, even for children, when using it.