This box includes the Aroma Energy refill – Tonic Aests in 475 ml (16 oz) format
  
Ready-to-use solution enriched with the right dose of essential oils, without the risk of creating an overly diluted or overly concentrated mixture. Limits scaling and clogging
  
The electric diffuser settings can be changed using the remote control
  
Easy to use refill, easy to replace fragrance2 year guarantee