Default Pressy / Mikey ... Problems with Klicks on the Button

Hello,
i bought a Pressy Fake / Mikey what ever it is... and got some Problems when pressing the Button.

I used 2 Apps: MikeyApp and Klick App both Apps are working but not as i epexct!

1x Press on the Button all is fine and through the app all is starting as i have configured it in the app
BUT:..
2x Press it calls the last saved number in my Phone ... its doing what it SHOULD do when a Headset ist pluged in
Long Press... its opening Google Now and activates the Microphone


Ist it somewho possible to deactivate this typical behavior of the phone, it actually never use Headphones..

For the people who are interested in the button you can get it with free shipping for 1$

Link to the Button i bought