Features: Ultrasonic technology: Using advanced ultrasonic technology to drive dogs, effectively preventing dogs from barking or behaving improperly.<br> LED indicator light: Build in LED light, can be used at night or in low light conditions, ensuring visibilities during training and improving safety.<br> Portable Design: Small size and lightweight, easy to carry, can place in a pocket or attach to keychains for training.<br> Multiple gear selection: Supports multiple frequency adjustments, allowing users to flexibly adjust according to their dog's reaction, ensuring the best training effect.<br> Full of durability: Quality materials to enhances the durability and applicability of the product.<br> Specifications: Material: ABS<br> Color: orange, black(optional)<br> Size: approx. 106x24mm/4.17x0.94inch<br> Power: 25KHz<br> Lamp beads: 365nm<br> Package Includes: 1 Piece Anti Bark Device<br> 1 Piece Charging Cable<br> 1 Piece Wrist Lanyard<br> note: Please allow 1-2cm errors due to manual measurement.<br> Please allow for slight color differences due to different display resolution.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin