The Lock is 100% authentic #318 and the chain is unbranded. Includes a "Gold tone" Necklace chain that is easy to snap on and off without opening the lock. The chains are 40cm. And as shown "choker style"! These are Rare to come by and I did not lock the lock, in which you can find the key easily or shut the lock yourself (key not included). Same day shipping, with superior service and packaging! Any questions please let me know, also bundle and save! Thanks