This Time-Turner is an authentic recreation of Hermione's Time-Turner pendant necklace featured in the movie Harry Potter and the Prisoner of Azkaban. The Time-Turner is centered with a working miniature hourglass and its inner rings rotate, the knobs on the side do not. It is plated in 24 karat gold and measures 1 3/8" in diameter. The chain is 19" long. Comes complete with a display.Please note: while this Time-Turner is fun to hold, it's a true collectible and not a toy. It's fragile, and may break if handled roughly.