DOPA Bark Collar, Rechargeable Anti Dog Bark Collar 7 Adjustable Sensitivity Intensity Levels Harmless Bark Collars Small Medium Large Dog No Harm: Our bark collar is humane and harmless. This no bark collar has 7-grade adjustable sensitivity and 3 training modes  sound, vibration, and static shock. You can use them all together or separately. Choose a suitable sensitive level and suitable model for your dog and effectively stop barking with no harm to dogs. Usb Rechargable: You can charge the small bark collar with your laptop or mobile phone adapter. Its very easy, useful and Eco-friendly. You dont need an extra adapter. Built-in 280mA li-ion rechargeable battery can last about 14 days for regular use. For All Size Dog 7-110LBS: Whether your dog is a small dog or a large dog our adjustable barking collar can fit them just fine. Will fit small, medium and large dogs. This no barking collar will work for just about any dogs. High Quality Design: The sensor and vibrating slim unit is made from a solid piece of durable plastic. The frosted black housing is durable and scratch resistant. The belt of collar has 2 reflective strip sewed in, which means you could find your dog even in the darkness. 100% Service And Guaranteed: We are happy to provide full satisfaction with our Anti Barking Device. And offer 1 year warranty! Buy it with confidence!