My bike has a rusty chain. Also, a small mark on the display screen, bottom right. This bike is sold in Europe without mudguards but I had some ordered from China and fitted (only the back one to be precise).
Protect your bike – get a security protection label!
Apply the protection label to your bicycle and instantly reduce the risk of theft by up to 50%! Moreover, if the bike is stolen, you increase the chance of its safe recovery by up to 70%.