Feature: 1. GPS Fence: Equipped with a powerful chip, this GPS dog fence offers a superior signal boost that improves performance in low-signal areas, ensuring precise positioning. Making it the reliable choice for boundary containment. 2. AI Recognition Technology: The unique intelligent scene recognition technology detects the usage environment, whether indoors or outdoors, eliminating false triggers and providing the most accurate boundary control. 3. 3 Adjustable Warning Modes: Our dog vest fence system has three warning modes: sound, vibration, and electric shock. By matching different gears, you can choose the warning intensity that is more suitable for your dog. 4. Large Area Usage: Designed for outdoors areas and can cover a circular scope with a radius of 30-1000m, allowing you to adjust the boundary size according to your needs. Battery lasts for 16 hours of continuous use. 5. Ergonomic Design: The chest-back design is adjustable in size and suitable for all types of dogs. The thoughtful night reflective strip makes it easy for you to find your dog and protect your dog's safety at all times. Specification: Material: ABS, Cloth Color: Black Battery: 700mAh Package Size: 14.2 * 7.75 * 6.7cm/5.59 * 3.05 * 2.64in Package Weight: 210g/7.41oz Package List: 1*GPS Wireless Dog Fence 1*Charging Cable 1*Manual