The chronograph is easy to setup and easy to get readings for most calibers and velocities. It seems to be very accurate. It truly is a great product.
The reason I don’t give it 5 stars is because it is incomplete and the app is way under developed. Generally folks have to buy a mount, battery pack, 90 deg cord, SD card, trigger device, a case, and a sight to feel like they are complete. I guess I would like to see the battery included or maybe internal and some discounted kits so it is clearer that a person needs about an extra $100 to get up and running.
The app drops connection, has no reporting functions, etc.....it adds nothing but frustration to the device.