体积小/Small Volume
充分考虑内部空间，减小体积
Make full of internal space to reduce volume.

成本低/Low cost
优化装配工艺，提高生产效率。
Optimize assembly process and Increase productivity.

运行平稳 /smooth running
做工精致，性能稳定。
Exquisite workmanship,working comfort.

携带方便/Compact and corvieht
把手和外壳一体式设计。
Hardle and case integratend desigh