you will need both the transmitter and the finger button

This very compact and strong rare earth metal magnet can be attached to your favorite toys using the included cable ties

it is possible for a prong collar to come undone and fall off of the dog while in use

Allow 10 to 12 weeks for delivery

This foamed polymer material is not only light but very flexible

E-Collar Technologies Sound Box Sprenger you will need both theWorks with current E Collar models Charger included Will not pair with older "TS" models [split] The Sound Box also known as the Tone Box is great for teaching and or monitoring the timing, stimulation level and duration of stimulation for the dog being e collar trained. Works on most current E Collar Technologies products. Charger included.