This is a great little device -- inexpensive (especially compared to a real radar system) and it works!

- You have to measure off the distance you're pitching from since it uses simple timing to calculate your speed. There are 8 or so preset distances to choose from.

- The pitch speed calculation was right in line with our experience at a real radar gun setup so it seems like it's pretty accurate.

- The repeatability is very good.

- One downside -- passed ball into the swimming pool fried the circuits, so beware that it's a bit fragile as an electronic device.

However, at this price point, it's hard to beat it.

Highly recommend! 5 stars

This ball cost me about a dollar a throw. It stopped working after only a few throws. It was not hit or abused in any way. Probably another fine product from China. 1 star

Bought as gift for 10 yo, who likes it but isn't majorly impressed. Speed reading seems to be inconsistent and even he noticed. 4 stars

I placed an order with The Batter's Box the first week of August. Delivery date was supposed to be the middle of August, and on that date they sent me an email saying that the product would be delayed about two weeks. 4 weeks later I still had not received my product, so I emailed them. After a week of waiting for a response that was never received I called the company. I was told that no one there could help me because only the owner could sign into the Amazon account, and he was at church at 7:00 pm on a monday night. I asked if he could return my call, and instead of calling me to let me know what was going on with my order the owner had decided to cancel it. Overall I would not recommend anyone buy from this seller. He has very poor customer service!!! 1 star

As a Grandmother.... it's hard to know what kids will like.
My 14yo grandson plays baseball as a pitcher..... this way he can work on his speed. 3 stars