Card mini speaker resonance enables plane, pleasant voice hard objects, make substances that come into contact with it a sound, solid away from so much music in the air (such as wood, glass, steel, rocks, etc) transmission medium; 2. new way to voice will make music everywhere, 360-degree angles can penetrate the body wall-free sound. No matter where they are, the music will be around you, make the music with your heart and move; 3. fall-tolerant characteristics. 　　Full metal jacket, resistant to external forces beating and fell accidentally. This new sound principles will give you a new appreciation of music lifestyle, increase the subwoofer features to compete with traditional audio; in a stress HI-M the use of rechargeable batteries on the same basis, is more compact, stylish, portable, stylish hi-tech products caused a revolution in the audio-visual field.