Anti Interference X1l Customizable Mini 4G Personnel GPS Tracker for Left-Behind Children. Multi-GNSS Positioning: Supports GPS, BeiDou, GLONASS, AGPS, and LBS for accurate global tracking. Dual Network Support: Compatible with LTE-FDD and LTE-TDD for reliable connectivity across regions. Electronic Fence Alerts: Define safe zones and receive automatic notifications if the device moves outside. Compact Lightweight Design: Dimensions 57*50*20mm with no screen, ideal for discreet personal or asset tracking. Customizable Packaging: Offers standard packaging or fully customized packaging options. One-Year Warranty: Covers non-human damage with free replacement parts and labor for one year. OEM/ODM Services: Full customization available including branding, designs, and software functions. Low Failure Rate: Manufactured on SMT lines with strict QC, achieving a failure rate below 0.02%.