Automatic Anti Bark Barking Dog Shock Control Collar Device Large Medium Small

Specifications: Color: Black Material: ABS, Fabric Strap Type: Electric Power Supply: 4 x LR44 Batteries (Included) Adjustable Range: 12'' - 20'' Control Method: Static/Shock & Sound Voltage: 6V Size: One Size Fits All Item Size: 69 x 37 x 30mm Max Neck Circumference: 48cm(18.90in)