The chain length is approximately 41 cm, measured by an amateur. This is an authentic item purchased at Takashimaya. It has been stored in a dark place without being used since purchase. I am selling this because I purchased a new one. Although it is a new, unused item, please understand that it has been stored by an individual. The box and accompanying bag are included and in good condition. There are no noticeable scratches or stains. Immediate purchase is welcome. Thank you for viewing.