Features:*Durable and Waterproof: Made of high-quality plastic and designed for outdoor use, the outdoor ultrasonic bark stopper is durable and waterproof.*Two placement methods: This bark stopper is designed with hooks and can be hung or placed on the ground.*Dog Barking Control: Quiets dogs and stops excessively noisy barking by emitting ultrasonic waves, suitable for all breeds and all sizes of dogs.*Rechargeable: This bark stopper has a built-in large-capacity battery that can be recharged via USB, with low energy consumption and long standby time.Multi-Function: There are 3 levels of sensitivity (effective range is 4.5, 9 to 15.24 meters), and a test level. The outdoor ultrasonic bark stopper has a power indicator that can be set to "Off" to protecting the battery when you are away.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementMaterial: PlasticSize: 110*85*48mmProduct voltage: 3.7VBattery capacity: 1500mAhCharging method: USB