Characteristics SG-F77W: Max. power 280W - Diameter 20cm / 7.7", fully watertight speakers IP65 Silk tweeter dome with innovative and highly durable design The cone is made with Curv technology, made of composite glass fiber.So Fusion got a thin and durable cone, able to release well-defined sounds and a perfect audio output. Perforated metal grid - Elegant classic white finish, discreet and refined design with perforated metal grid.Suitable for indoor or outdoor installation.