Unilateral retractable internet telephone hand-free:.

1. We self to do 13mm earplug of earpieces, is comfortable  to ears, it inside receiver and microphone, the weight is only 3.2g, is most light in the world.

2. Just only 2 seconds when you receiving the call, pull it lightly and wear on ears, it let your hands freedom.

3. The cost lowest than wireless and reduce the usage of radiated products, and to avoid harm of electromagnetic wave, another it could solve the trouble of clean cable of wired products, it is quickly clean and collect, and convenient to carry with you.

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

5. Be changed the surface by customer’s design for different selling area and brand.