Thank you for viewing. The size is approximately 2.1cm x 0.9cm. This includes the protruding parts but not the ring. Please allow for some error. The material is a lightweight material, like aluminum. Compared to domestic products, the construction may be less refined. Also, the images used are common ones. Although it is new, please refrain from bidding if you are concerned about minor details. It will be sent in a simple package, in a plastic bag, via standard mail without insurance. Color: Gold