FUSION Marine Speakers are designed and engineered from the ground up to incorporate state of the art audio innovation never seen before in marine speakers. Comply with ASTM Standards for UV Stability and Salt/Fog Resistance Comply with IP65 Waterproof and Dust Standards. Designed to withstand the harsh marine environment and comply with International ASTM Standards for UV Stability (ASTM-D4329) and Salt/Fog Resistance (ASTM-B117). Complies with IP65 Waterproof and Dust Standards and features a fully sealed cross-over, magnet and tweeter housing with waterproof cone and surrounds. High efficiency design reduces battery drain.