This product is done by remote control just a silent vibration features, voice commands are also available. 

 Remote control bark collar is the only world's only humane, safe and efficient use of digital electronic products pet discipline. It consists of master remote control and receiver collar component, the receiver collar with the pets neck, by the master remote control, receiver collar produce high-frequency vibration. 
 The vibration frequency vibration is present and no harm pets, for the dog to stop barking and inappropriate behavior that has amazing results, after the success of vibration interference should be promptly told the dog owner should not be done, after numerous discipline , dog's bad behavior will be significantly reduced, remote whistle sound to convey the owner's instructions, after training, can make a particular whistle dog owners to understand the instructions. 
 First, the use 
 1, the receiver need not switch the power supply is automatically sensitive. 
 2, open collar buckle, with the pet's neck, adjust the tension to a finger can be inserted into appropriate. 
 3, first put on collars, pets are not suited to many at this time do not rush to use the remote control, has been used in certain pet collar receiver and then open the battery switch, high-frequency vibration is used to stop the inappropriate behavior of pets, can not indiscriminate use of tools or for playing with pets. 4, no remote control in determining the time, he automatically turned off to save power. 5, no time, you can not remove the collar, because the role of conditioned reflex, a collar put on, day training, instruction is still very effective. Not using the receiver collar, which can be removed and attention off the power. 
 Second, the battery replacement method 
 1, the receiver: the receiver housing connected by the two screws, screws with the tool along a counterclockwise rotation, the plastic case open to see the battery, remove the update, and then close the case after the use of screws. 
 2, the remote control: remote control of the lower back has a battery cover, push the direction of the arrow to open. Remove the battery. Update will then close the battery cover.