Give your home a relaxing atmosphere with this Obsidian Bluetooth Ultra Sonic Diffuser BSOBS. This diffuser features a stunning shape and design. It is made of hand-blown glass in swirling shades of black, white and gray. The extra large capacity means that this diffuser offers a higher mist output than traditional diffusers. It also functions as a Bluetooth speaker so you can play relaxing music or nature sounds as well.