The Better Dogs Pack 3 includes:
Acme Alpha Whistle (select pitch from options)
Field and Fireside Lanyard
Rope slip lead
10m training line
 
210.5 has a high pitch, single frequency, preferred by spaniel owners and trainers but is an excellent all-round dog whistle for close and distance control.
211.5 has a medium high pitch, single note, preferred by labrador and retriever breed owners and trainers. A good distance whistle.