[Efficient bite control device] Long-lasting mild dog bite control, dog training and dog bite deterrent: Improved dual speaker, more effective than old version of dog bite deterrent. [Control For Most & Safety] The bark control device automatically makes safe sound sounds that can hear clearly but does not hurt 'and humans' ears. Suitable for most breeds and sizes of , except with hearing problems or less than 6 months old. Ultrasonic bark automatically detect barks up to 33 feet . [Rechargeable & Long Operation] Built-in 1500mAh rechargeable lithium battery, fully in 4-5 hours, can be used for 30-45 days, long standby about 60 days [Easy to use for indoors and outdoors] This new bark control device comes with a cute and well-designed mini shape. Waterproof designed for easy hanging / mounting on a tree, wall or fence post to prevent any dog from barking (within 33 feet). The anti-bark device has a power indicator. When you leave, it can be set "Off" to protect the battery. [3 Adjustable Volume Levels & 33ft Control] 3 Adjustable Volume Levels & 33ft Control Distance, Perfect For Barking Control & Dog Training. [Product name]: ultrasonic bark plug [Product model]: K14 Colour: white + black Material: plastic Size: 13.3x8x8.7cm Package Contents: 1 * Anti Barking Device 1 * USB Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.