Sound Activation Tilt Sensing - the agitator always pulls the balls up towards the feed hole. If you tilt it the right it spins counter-clockwise. If you tilt to the left it spins clockwise. Low frontal profile with 210+ ball capacity
The Odyssey HALO TSA LCD Backman is newer, so it should be commonly available, both new and used.
This thing is great! This thing keeps up with my gun perfectly. I only experienced one chop on full auto in testing and that was because I forgot to turn on the hopper. I had no problem with the feed neck on my gun. Great for auto guns. I had no chops the whole day and it was a perfect fit.
Get this if you experience frequent chopped paintballs or just want a kewl looking hopper.