Tie-up / hands-free

Handsfree and bluetooth earphone have their structures which are apart from the user\'s mouth.

So, they are easily affected various noise.
But if you use \'Tie up\', you can raise up the microphone to near your mouth.

Therefore, you can talk over the telephone very quietly without any effort.

It is very helpful in silent public spaces such as library and subway or very noisy spaces such as football field and construction site.

Also, \'Tie up\' has no buttons, you can control it by just simple and familiar movements.