Recycled bamboo Diffusion mode: 2 hours continuous mode by fan cold diffusion Covers up to 215 sq.ft Light colour: 7 multicoloured lights or selection of one colour Power: USB cable or Lithium rechargeable battery Dimensions: diameter 3.9 x height 2 inches The Crown Chakra is the seven. It is the center of spirituality. It will lead you step by step to the feeling of eternal gratitude. When your Crown chakra is balanced, you feel peaceful, joyous and happy. OPERATING Place the diffuser on a flat surface. Twist and remove the cap on top of the diffuser. Pour a few drops of essential oils onto the absorbent pad. Place the pad into the diffuser and replace the cap. The diffuser uses a USB cable or Lithium rechargeable battery. USB cable: connect the cable to the jack on the back of the diffuser then plug the cable into a USB port. Lithium rechargeable battery (included inside): push the ON/OFF button to start function.