KeyecuModified Flip Floding Remote Key Shell for S60 S70 S80 S90 V70 Case FOB 4+1 Button

Does this include the spring mechanism for the key to pop put?

What is the yellow button for? My remote looks the same except for no button where the yellow one is in this photo

Does this remote come with metal piece that touches battery are

Is the key blade hinge when extended supposed to be so weak? It folds in w/out even pressing the button.