2 Bulk batteries, 6-Volt, Brand new, long lasting Vinnic Alkaline Batteries. For use in all Premier/Innotek/Multivet citronella and scentless collar products. Gentle Spray Citronella Anti-Bark Collar, Spray Commander. The most effective and human solution to nuisance barking. Spray Commander/Virtual Barrier Indoor barrier system that effectively keeps your pet away from off-limit areas inside your home. Virtual Fence Outdoor containment system that gives your dog freedom and safety within your property boundaries without fences, chains or kennels