My trainer came with a computer that is usable both on the trainer, and the road. It's called the Elite Crono InOut. This is an older model now, and I don't use the computer except on the trainer, but I'm sure Elite makes another trainer with similar capabilities. I like the trainer a lot, it's very smooth and you can control the resistance from the computer. Also the roller part contacting the wheel is not metal, so it doesn't wear my tires at all.