Product advantages: 1. Remote control training, built-in automatic anti-bark dual function machine, saving consumer cost. 2. The unique bark control technology is only effective for the barking of the dog currently wearing the collar. 3. The company has been specializing in pet training products for many years, and has accumulated rich technical experience to ensure more stable product quality. Product specifications: Product material: ABS / strap / silicone; battery capacity: lithium battery 300 mAh; Power mode: USB charging; strap size: 75 CM adjustable (23 CM - 65 CM) Remote control: 13.2x4.8x2.0CM Bark control: 6.4x3.8x2.5CM