✅【Humane & Harmless Mode】Our bark collar has 3 training modes including beep,vibration and no harm shock.Anti Barking Collar with 7 adjustable sensitivity levels can effectively train your dogs.You can select a suitable sensitive level and a suitable model for your dog as needed to effectively stop barking without hurting them. ✅【2018 Upgrade Intelligent Chip】Dog bark collar uses the latest Intelligent chip for barking vibration detection instead of sound detection.Only your dog's barking can trigger the no bark collar,prevent false triggering from other dogs' barking nearby. ✅【Auto-Protection Mode】Anti-Barking Collar has an automatic protection mode to deactivate the collar if the bark collar keep activate for 7 times in 1 minute.After another minute,it will get back on work mode. In automatic protection mode, press any button to re-enter the work mode. ✅【USB Rechargeable & Rainproof 】USB rechargeable design can easily to charge with your laptop or power bank.Fully charged only need 1 hour can support up to 10-14 days of use.Rainproof design is available for both indoor and outdoor use in different weather. ✅【Fit For All Sizes of Dogs】Bark collar can be adjusted the length and tightness to fit all small/medium/large dogs within 6.6 to 150lbs.The adjustable strap is made of high quality reflective nylon collar which will ensure the safety of your dog in the darkness.