Yep i have owned one for a couple of years now. They are reliable and have good features. If you read some of the reviews on Amazon you will see the negative reviews are largely people that dont understand the instructions. I didnt have a problem, its a case of understanding the menu hierarchy. Why did i buy mine? price was the main driver, i later found out that it can do so much more than i need, and can be used with all calibers. A guy from my club said there were only used for airsoft, thats absolute rubbish. They have adjustment settings for the calibers i shoot and more. I have never used it with airsoft. and always used it at outdoor ranges. I love the large display, and the price. The price of other shot timers have seriously got way out of control.
Here is a review: