Brand new, unused Instant purchase OK Anonymous delivery This is a shower head that provides a comfortable shower experience with air-infused ultra-fine bubbles*1. The water contains bubbles, generating ultra-fine bubbles with a bubble diameter of approximately 0.0002mm. While maintaining the same comfortable feel, it also offers approximately 40% water saving*2. Installation is easy and requires no tools. (Resonance noise may occur depending on the usage environment. Turning the air switch OFF will reduce the resonance noise. *Turning OFF the switch will also reduce bubble generation.)