2-dog; Low to medium power; 1/2 mile range; nick and constant stimulation and vibrating page; waterproof collar/receiver; rechargeable The 202NCP Gold bridges the gap between our popular pet trainers and our Pro-line. It incorporates many of the features as our Pro-series at a more affordable price. Features include water-resistant transmitter/waterproof receiver, half-mile range nick/constant stimulation, and our patented non-stimulating pager mode along with Dogtra's industry-leading durability. Rechargeable Ni-MH batteries. One transmitter will operate 2 collars independently.