Dimensions and weight: outer chain circumference is 42 cm, inner chain is 305 cm, extension chain is 8-10 cm, pendant length is 11 cm, weight is about 5 grams Material: made of copper Application: Provide gifts for daughters, lovers, girlfriends, wives, mothers, couples, lovers or friends; really wonderful gifts for important days of the year, such as: anniversary, birthday, w Jewelry care: store in a jewelry box, avoid contact with oily hard substances and chemical substances, wash with warm water, wipe with a soft cloth, try not to wear it when bathing