Sphere Loudspeaker Click Here to know the glossary : SPS-5121PW Splash Waterproof Sphere Loudspeaker 5” Full rangeRated 12W89 dBSPL (1W/1M)ABS SPS-6201PW Splash Waterproof Sphere Loudspeaker 6.5” Full rangeRated 20W91 dBSPL (1W/1M)ABS SPS-6301PW Splash Waterproof Sphere Loudspeaker 6.5” Full range Rated 30W92 dBSPL (1W/1M)ABS