Zuru My Magical Mermaid, Corissa 845218009540 Carbon switches on either side act as pressure sensors to activate the mermaid when it comes in contact with water 2 different swimming patterns: up/down and backstroke Removable ring will act as a weight and determine swimming Place ring on the Mermaids tail and she will swim up and down Place ring on the Mermaids head and she will backstroke (ring will be in the form of a tiara)