Description: Crystal Salt Lamp: diffuser comes natural salt crystals. When using the diffusers for essential oils, it will release negative ions,Effectively removing peculiar smell in the air and purifying the air, creating a calming and soothing atmosphere. DIY Creative Ideas: diffuser essential oils possesses DIY ideas, can fill all kinds colorful stones and crystal gravels, adding different beautiful materials to improve aesthetic fatigue and enjoy visual interest. Our essential oils will last for 8H without adding water frequently. Multi-functional Essential : Aroma night lamp are integrated to this , protecting your family from excessive dry season, dust, and more. 7 LED : Comes with 7 soothing colors, the overall fragrance diffuser looks like a ice bucket, the combination of continuous mist and different lights looks like the scene when the melting, creating cool visual enjoyment. Specification: Material: Plastic Size: 78x78x145mm/3.07x3.07x5.71inch Package Includes: 1 Piece Essential 1 Piece USB Cable 1 Piece Instruction Book 1 Bag