I got these things on amazon for 15 Bucks, i’ll put a link below comes with two strobes four batteries and stickies to mount on the drone. So wait for nightfall see how they do. W porządku, so drones on its way back, went up to 400 and easily could see what this little strobes i’m impressed. I got ta say this thing worked great, so was it worth the 15 bucks on amazon, i’m gon na say yeah? They work pretty well check the link below.