Petrainer IS-PET852 Anti Bark Electric Collar for Small or Medium Dogs, 3.14 by 1.85 by 3.03" Easy and convenient to test the functionality and sensitivity by blowing 2 training modes: beeper and static shock 7 different combinations of beeper and static shock to train dogs effectively The collar turns into 1-minute-automatic protection mode after 7 times consecutive working Adjustable leather leash from 6