100% brand new and high qualityMaterial: ABSColor: BlackSafe， Humane， EffectiveEmits piercing ultrasonic tone that dogs hateWorks with most dogsCan also be used to train dogsStop the dog approaching you before it can bite youKeep unfriendly Dogs away. Protect yourself from dangerous dogs while walking， jogging， or bicyclingGREAT FOR: Joggers， Walkers， Delivery people， Mailman， Meter Readers， Sales people， Bicyclists， Police， InspectorsAlso can be used a torchFrequency:35-45HKZEffective range :Melee RangeSize: As the picture showsPower: Uses one 9v Carbon or alkaline battery(not included)Quantity:1PcNote: Due to the difference between different monitors， the picture may not reflect the actual color of the item. Thank you!