they are the waterproof 1meter LED strips from hobbyking, come in red, blue, yellow, green and clear. They can be cut in different lengths and are easy to solder up into a nice display. On the xo-1 I run 2x 3s 2500mAh 3c tx packs parallel and they same pack's still shine bright after about 2.5-3 hours driving. The led's also make changing pack's and working on the car a breeze, leave the light's on and stand the body up against something behind the car and you can see everything you need. I have a couple of yacht's that have around 4 meter's of these led's on them and one runs the zippy 3c tx pack and get's around 1.5 hours from a 2500mAh pack. The other yacht runs a 4s 5000mAh nana tech lipo and this also get's around 2hours sailing and the battery comes back with around 3.6-3.7volt each time, nice and safe. Here's a little video of the led's on the yacht's.
[YOUTUBE]http://www.youtube.com/watch?v=yKVg8rZBeAY[/YOUTUBE]
and here's the HK link
http://www.hobbyking.com/hobbyking/s...dProduct=14286
good luck, I hope you have as much fun as I
