Add additional pets to the SD-2100 (ZX94105) Innotek Containment Systems. Receiver is small, lightweight (2 1/2 oz), waterproof, delivers three levels of stimulation, and includes a rechargeable battery.  Fits dogs over 8 lbs. For dogs older than 6 months.

Do not leave the collar on the dog’s neck for more than 12 hours per day, allowing equal time off the neck.

Adjustable collar fits neck sizes 14"-24".