Shenzhen LoreWin Technology Company is one of the leading China electronic dog collars suppliers, welcome to buy our cheap electronic dog collars or wholesale products from us.3 Training Functions Electronic Shock Dog Collars  Features:* 6 intensity levels for each modes;* 3 training modes: Sound+electronic shock, sound+shake, shake+electronic shock;* Rechargeable and waterproof;* ON/OFF button;* OEM & ODM avaliable. Description:The bark terminator is controlled by a microprocessor which distinguishes your dog's bark from other environment noises and automatically delivers sound and shock stimuli after each bark. The output level of sound and shock is increased gradually as barking. Continues, giving your pet plenty of warning before it becomes painful. The bark terminator is unique pattern of increasing sound and shock quickly teaches your pet that it is its own bark that is causing discomfort. It takes time to break bad behavior. How to switch Functions?There are 2 holes on the side of the item, one is charging port, the other one is function swith port. You only need a thin stick as a key for function swith:1. Press the function switch port of the first time is the sound+electronic shock;2. Press the function switch port of the second time is the sound+shake shock;3. Press the function switch port of the third time is the shake+electronic shock;4. Press the function switch port of the forth time is power off. Tips:-Don't allow your dog to chew this collar, you should also attempt to minimize scratching or clawing at the casing;-This device is made up of plastic and electronic components that are not digestible, counsult your local vet if your dog swallows any part of this product;-The collar is not intended for using as a restraining collar;-Although the bark terminator's microprocessor is designed to differentiate your dog's individual bark from away environmental noises, the unit may occasionally be activated by other vibrations, sounds, this is normal, but it should not happen so often as to be confusing to your pet;-The unit is designed to be water resistant, but is not fully immersable. Accessories:1 x Bark Terminator1 x Adjustable nylon belt1 x Charging plug1 x USB Cable1 x Test Light4 x Metal Probes1 x Operating Guide Packing:G-box size17.5*13.2*5.2cmCTN MEAS42*36*40cmQty/CTN75 pcsN.W12 kgG.W14 kg‍