Anti Lost Function: This Dog Tracker Collar is great for cat collars, wallets, backpacks, suitcase, and so onFeature: Simple and cute appearance design, adjustable dog collar, easy to put on, and take offPosition Tracking: Supports real time GPS, AGPS, WIFI, OTHER positioning, SOS help, Real call, Electronic Fence, historical track queryDesign: The Smart Collar can be query running track within three months anytime and anywhereApplication: The dog anti lost location tracker is very suitable for your dog daily walks, training, outdoor sports, etc. Great gift for dog owner Specification: GPS positioning accuracy: within 10 metersWIFI positioning accuracy: within 50 metersNetwork positioning accuracy: 50-200 meters Size Chart: 6.03cmx3.3cmx1.88cm/2.37inchx1.30inchx0.74inch Package Includes: 1 Dog Tracker Collar1 cable Note: Please allow slightly errors due to manual measurement and different monitors.