Feature: 

1. Ultra-high-fidelity sound, pleasant stereo sound 

2. Ultrathin and ultra-light hardware case, delicate and beautiful 

3. Industrial grade paint technology, smooth and uniform, waterproof and dustproof, anti dust and mill!

4. Verity and complete software, stable and reliable

5. Have a lock, anti-theft functions

6. Widely used in the bus, building and lift room, supermarket, pubic places, train etc