4PCS Wireless LED Strobe Lights with Remote Control, 8 Colors Rechargeable Led Lights Anti-Collision LED Emergency Warning Lights for Car Motorcycle Bike Drone Aircraft: Good value, kit comes with parts to get you set up. For small lites, most powerful lites I ever seen for its size. Came with instructions, mostly easy to understand, it does seem to only take 1 hour to charge (each light). Remote has a screw for its battery, but you need smallest Phillips screw driver ever, ie for eyeglass repair size - so I recommend remove the screw and just scotch tape it, unless you got tiny screw driver in car, office, and at home and don't care if you strip it- trust me, taping it shut is easier on/off. Even has a steady on pause/static on mode. You'll never know, but on back of each light is a tiny oval black rubber piece, you need to use tooth pick or pointy tweezers to loosen it out (use care not to lose it), in order to charge; If you dare use a small knife to pull plug out, be careful not to puncture hole in the plug, or cut yourself. I got long finger nails - does the job. You want to replace each cover before you re-install/use to help inners stay clean, dry & dust free; Else buy spare covers later, or cut a black rubber band into tiny piece. it also has yellow light, I wish it had an orange color, it don't. The yellow is a light yellow, almost white. Convenient, light weight, nice not having to wire it to your car battery. You can charge it to a USB power source. Will not light your path on the drive road / street, but is very bright for other drivers to see your lights from a great distance. For my needs, I needed to use creativity with various velcro kits and velcro tie down (from computer stores) straps, scissors, and got mine to fit my rig system nice and tight. Or just use your own better quality rubber bands. With use, there are times I need to use the remote itself to re sync all the lights to be the same patten, but I am able to manage doing that, it is not very hard at all, just be patient and read the words on the buttons to leans what does what, tinkering with on/off, other buttons will solve any sync glitches . Liking these lites. Despite sometimes only 2 of the 4 work, over days all 4 work, inconsistent, I like these, look great, can adjust position, small, light weigh, the 3 brightens levels work - hi, med, low, the colors work superbly.