Unilateral retractable MP3 earphones:

1. Size: Diameter 3.4 x H1.5cm.

2. Retractable length 58cm.

3. It adapt hi-stereo speaker, could let you enjoy authentic music, don't tired your ears for long time.

4. To use silica gel earpiece, also let your ears comfortable when listen.

5. Special shell design:

(1) Could to tie necklace to hang upon neck.

(2) Could to tie elastic to combine the MP3 player together.

(3) Could print the logo and mark on it.

(4) Attached a limpid lens to put in mark and DIY personal photo.

6. The cost lowest than wireless and reduce the usage of radiated products, and to avoid harm of electromagnetic wave.

7. It could solve the trouble of clean cable of wired products, it is quickly clean and collect, and convenient to carry with you.

8. “Unilateral Retractable Construction”, it have got formal patent license at this unilateral retractable device, selling in USA, Europe and Japan now.

9. The unilateral retractable device applied to your products, to increase your function and added value, it is fit in with diversification and distinction at your promoting.