1.Material: Plastic; Color: black ; Frequency: 25 KHz ; Sound Pressure: 130d 2.Features: Ultra-sonic Dog Pet Repelled Banish Training Device Trainer with LED Light. What can you do when your pet dog starts barking non-stop? With the ultrasonic dog trainer, you can train your pet to be obedient, corrects misbehavior and stops barking. 3.Simple turn the switch and use Effective, but no harms to human and pets Can be used as a torch at usual times with easy-to-carry strap Compact, convenient and easy to use 4.A must item for pet owners Perfect for training all kinds of dogs such as that are used as pets, in police and for shepherding 2.What can you do when your pet dog starts barking non-stop? With the ultrasonic dog trainer, you can train your pet to be obedient, corrects misbehavior and stops barking.3.Simple turn the switch and use Effective, but no harms to human and pets Can be used as a torch at usual times with easy-to-carry strap Compact, convenient and easy to use4.A must item for pet owners Perfect for training all kinds of dogs such as that are used as pets, in police and for shepherding