1. All-weather design (moisture-proof, heat-resistant, salt-resistant, sulfur-resistant), can be used for a long time in a variety of special environments; 2. High sensitivity, high sound pressure level design, wide frequency response coverage; 3. The sound is clear and pure, easily coping with various background music and voice reinforcement needs; 4. Simple and generous appearance design, which can be integrated with various occasions; 5. 4.5/7.5/9.5/13Kg at Weight, equipped with complete installation accessories, making installation easier and quicker; 6. Adhering to HiVi's consistent Hi-End concept, let music accompany you at any time.