THIS EFFECTIVE STAG CALL, COLLAPSES DOWN TELESCOPE STYLE TO APPROX 7" LONG BY 3" IN DIAMETER,  IT IS EXPENSIVE BUT  REALLY DOES WORK,  YOU ROAR INTO THE MOUTHPIECE AND IN MY EXPERIENCE ANY NEARBY RUTTING STAG WILL CALL BACK THINKING HE HAS COMPETITION IN THE AREA.  I CAN RECOMMEND THESE CALLS HAVING CALLED UP UNSEEN STAGS HALF A MILE OR MORE AWAY, AND ALMOST ALWAYS GETTING A REPLY FROM ANY RUTTING STAG IN THE AREA, THIS ALLOWS YOU TO GET AN IDEA OF ITS LOCATION AND SO PLAN YOUR STALK. INSTRUCTIONS FOR USE PROVIDED.