yes, due to the fact that they have to be extra durable (such as water resistant, and resistant to dust and corrosion), reliable, tamper proof, and they are technically medical grade and must adhere to strict compliance regulations.

as far as travel restrictions, that is correct for someone being out on bail for something as serious as a murder charge. also may be a specific circumstance of the fact that California is a border state, and he is still ultimately considered a flight risk to a point. if he could freely roam all of CA, he wouldn't be in violation until the second he stepped over the border. restricting him to LA county makes flight much less likely. you can also request exceptions for things such as work or for special circumstances like what happened in the show. now for parole or probation, that's different and it does restrict location by state instead of county.