Portable,Lightweight and Small：shock collar for dog is smaller, thinner, and lightweight than other heavy training collar,only half the size of a palm,can operate with one hand; our training remote can be hung on your hand or put in your pocket. Ergonomics Design fits adults or children. You can enjoy the training time with your dog in the backyard, the park, the beach or public places anywhere else； 3 Safe,Effective and human Training Modes: sound(standard), vibration(standard), shock(adjustable 0-16 levels);PORUIS Bark collar designed for pet owners, dog walkers, and professional trainers,dog shock collar with remote can correct the bad habits like chewing, barking,biting,and digging; Adjustable and Waterproof Dog Shock Collar: our e-collar measures is 27inch. Training collar strap made of Skin-friendly and comfortable soft nylon,Fits dogs over 8 lb and up with neck sizes 6-27 inch,for large dogs, medium small dogs. Safety Lock Prevent Accidents and 3 Channels Remote : Compared with other dog training collar, our small shock collars with remote are carefully designed with a security keypad that allows you to prevent any misfires, No more miss operation,protect your dog; The dog training remote also controls up to 3 dog collars, so you can work with 3 dogs at one time by having our dog collar with remote. Quick Charging and Long Lasting Battery Life: Our bark collar with portable USB charging method can be fully charged in 1-2hours,The long battery runtime of this electric shocks is a true lifesaver on outdoor, with the receiver’s battery lasting for up to 10-20days in standby mode . Both remote and receiver can be charged by phone adapter, USB outlet of the PC/power bank/car.It lasts longer compared to the battery-operated one;