How does the string clip work?

The patented string clasp is available only on the Ex Factor.

While holding  the bass in playing position , push the spring loaded string clip up with the thumb of the left hand.  Pull the string out from under the clip head with your finger and release the lever.  You are now in concert tension “D” and all the notes on the scale remain the same-no transposing.  Pushing the lever up causes the lever to re grab the string  and you’re back in “E” again.  It’s very quick and easy to become adept at.  When the string is in “D” tuning you also have a “D#” note available.