The Wealth Ship Amulet itself is approx.  2" x 1.75".  The overall length of the Feng Shui Wealth Ship Amulet Keychain is approx. 4.5".  It is made of metal.

Warning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov