【Humane & Harmless System】This dog trainer fence is make of 2018 Upgrade Intelligent Chip. Smart control, safe shock without electronic and different modes to help you training your dogs easily. 【USB Charging & Lasting Power】Easy to charge the small bark collar with your laptop or mobile phone adapter which have USB port. Built-in rechargeable lithium batteries, it lasts longer. Up to 14 days for regular use. 【Waterproof 】 Waterproof device in this pet collar. You can walk your dog in rain. Don't worry about the training collar will broken. 【Adjustable Collar】This no barking collar will fits most dogs of 6-120LBS. You just adjust the collar to fit your pet. 【Quality Warranty & Best Service 】Unconditional refund if any quality problem. 1 Year warranty!