Humane System-The no bark collar has an adjustable sensitivity.Sound & Vibration stimulus to provide safe training cues even for your little puppy.you can adjust it according to the suitability of the dog. It can help stop unwanted barking and will not hurt your dog. Intelligent Anti-injury Chip-In order to better protect your dog, our no bark dog collar is equipped with intelligent anti-injury chip. Continuous activating your dog 7 times within 1 minute, no bark collar will entry sleep mode for 1 minutes, Our Anti Bark collar use 0~7 gear Shock. you can also choose no shock mode . Smart Barking Detection Chip-The collar can automatically detect, Only your dog's barking can trigger the collar while other dogs' barking nearby can’t trigger it. 2017 Upgrade Verson-Design with a digital screen shows the gears of vibration, shock,sensitivity and battery electricity. Others’ no bark collar can’t show the gears which is difficult to adjust gear. Rechargeable and Rainproof- DEPU offer 12 month warranty.Each collar contains a built-in USB rechargeable battery and 1 hour of charge time gives you 14-20 days of use to solve the issue of batteries replaced frequent. Rainproof and lightweight is great for indoor and outdoor use even in bad weather. Choose us to let your dog enjoy running in the rain.Rainproof in rain, but not in water.