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Sirenix Boxes are a special box that the Winx aquired in the fifth season. A Sirenix Box is needed for them to earn the Sirenix transformation.

After the girls found the Sirenix Book in The Power of Harmonix, Tecna and Aisha wanted to open it, but it wont open. The girls must find the Creature of the Rainbow Mantle and earn a new power before Sirenix. In the episode, Sirenix, they were no longer used.


  • The Sirenix Boxes looks very similar to the Water Stars. However, the Sirenix Boxes are much bigger and they are identical.
  • There are 2 unidentical gems in the Sirenix Box.

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