This underwater speaker is professionally and especially designed for any underwater locations such as Swimming Pool, Spa, Hot Tub, Sauna, Bathtub, Aquaria, Ocean Research Centers, etc.In addition, special configuration is adopted in this speaker design to make clear and excellent sound available underwater. The streamline design and tight configuration enable it to withstand powerful water pressure underwater as well. Its the latest item and is the Only Underwater Speaker owned by the manufacturer in the Peoples Public Of China. It is rather easy to install as well.