Ballistic Chronograph of Slingshot Speed Tester - Competition Electronics Precision Stable Velocimetry with Accurate MPS Readings for Moving Table Tennis, Badminton, Arrow

Works very well

The instructions are missing! Why?

Easy to setupWorks well for archeryComes with sparesDoes what I wanted it to do

First of all the bad bits. The build quality seems a bit flimsy but that could be due to the materials used in manufacture - if it falls over, chances are a severely damaged item. The batteries drain while not in use so need to take them out while storing. The instructions are next to useless and even stating that you need 4 AAA batteries when in fact it's AA batteries that are needed and there is no fps option either.Even though the instructions are next to useless, it is really easy to put the item together and once you have the right batteries, the device works quite well. I use it for testing arrow speed and would have preferred a fps option but then it's not hard to convert from mps. Although it has a option to cycle through shots, I would be more inclined to number the arrows and shoot them in order, then record separately the results.I tested the item in the indoor range as well as outside in relatively bright conditions. Inside was perfect although I had to dim one of the lights. Outside was OK provided you shield the sensors so could do with some sort of cover.The results were as expected - had nothing to really compare them too so difficult to say whether they were accurate.Overall, this is not a bad item at all and worth the money. Sure, there are more expensive items but consider also how much use you would get out of it for the money spent. Although not 100% perfect, I'd recommend this item.

Not bad for the price.

Does the job no frills, nice price

The instructions are gibberish , maybe get someone who can write instructions in English .

I have not tried it yet