Model Number: PA-501 Brand Name: Algro Key Specifications/Special Features: This product is mainly used for outdoor environment to prevent undesired dog attacksJust one push of button, the unit emits an ultrasound to a dog's hearingEmits 130 dB of ultrasound to a dog's hearing to stop attackUnit has a flash lightTwo excitation patterns to trainor to repel a dogPortable and compact sizePowered by 1pc of DC 9V battery (not included)

Dimensions: (W)127mm X (D)26mm X (H)47mm