For an unused camera, the time is set when it is turned on. If it is opened, it can be used.

Check whether the three codes are one, the manual or certificate, the serial number of the machine packaging box and the camera are the same. If it doesn't arrive, it may be parallel imports or second-hand goods.

Don't be greedy and cheap. If it is much cheaper than others, it may be parallel imports or two mobile phones. The price difference of the same machine is only tens of yuan. If the difference is more than a few hundred yuan, you should pay attention.

See if there are any traces of use.