Our Anti Bark Collar has 7 Levels sensitivity that display on upgrated smart LCD screen and 3 stop barking mode - Beep, Vibration, Shock. 1 to 7 Sensitivity level can be adjusted to fit for small,medium and large dogs and specific environments. Security is the most important. 8 levels adjustable for vibration and shock function and the sensibility function is 7 levels adjustable. The LED screen shows the levels of three modes, you can adjust it in different training stage. Built-in sensitive sound sensor and mic, give your dog accurate sound indication. With intelligent barking vibration detection instead of sound detection chin, only your dog's sound will trigger the sensors while other dogs' barking will not. This no bark collar is made of high quality waterproof material and sturdy plastic piece, is great for indoor and outdoor use even in bad weather. And adjustable collar strap length and tightness, suitable for all dog sizes from mini to huge. Bark control collars Use USB to quickly charge your rechargeable bark collar in under 1 hour with a battery life that will last up to 14 days, and with the convenience of USB you can charge from any device with a USB port.