DT Systems No Bark Trainer Collar: * Safe and effective tool to help eliminate any excessive or unnecessary barking from your dog * 9 levels of intensity for sensitive to stubborn dogs * Waterproof * Uses a regular 9V battery * Specially designed vibration sensor picks up vocal cord vibrations so it won"t be activated by other dogs" barking * Gentle Touch Stimulation with lower levels * 0.5 second corrective stimulation * 4 second safety delay * Fits medium to extra large dogs * Material content: plastic, aluminum * Imported