Bobcat miner 300

Hey y’all, I’m from Canada and have been looking to purchase a bobcat miner 300 off fb marketplace, I’ve been warned about buying a bobcat miner since it can already be synched from a previous person?

My question is when going to purchase a bobcat miner is there a way to tell if it’s already been used or not? I’ve heard you can plug it into a power source and tell by the colour light that’s on the miner? Is this true? Or do I have to connect to its Bluetooth to tell if it’s never been used? Any other tips to determine if it’s brand new and never used would be great, thanks!

Hey, I’m in Montreal and i have a new bobcat miner that is still in box and never synced. Can deliver to your address text me 5146126237