1. Choosing best printed card
2. Lithium battery test
3. Electronic parts assembly
4. Aging test
5. EVA positioning
6. Adjusting screen on printed card
7. Fixing electornic module into EVA
8. Inspecting function and connect with computer
9. Folding printed card to a finish product
10. The finished product assembly
11. Reconnect to the computer and upload video
12. Aging of finished product
13. Reinspection of finished product
14. Safe packing
15. The finished product delivery
2. Fixed speaker ring
3. Fixed switch
4. Clean switch piece
5. Asseembly of the bettery
6. Function test
7. Asseembly PCBA
8. Asseembly speake
9. Asseembly led
10. Semi-finished products inspection
11. Hot-melt adhesive sealing
12. The sealing
13. The first inspection of finished product
14. Clean card
15. Check the envelope
16. Each card is losded with OPP
17. Check again before packing
18. Every 6 PCS into the opp
19. Safe packing
20. The finished product delivery