1. 4G full network: China Mobile/China Unicom/Telecom LTE-FDD B1/B3/B5/B8 LTE-TDD B34/B38/B39/B40/B41 2. Multiple positioning modes:GPS + AGPS + Wifi + Beidou + LBS 3. Outdoor GPS positioning accuracy is 10m, indoor wifi positioning accuracy is 50m 4. SOS one-click help 5. Two-way calling; high-performance ceramic antenna; customizable buttons to dial different numbers 1. Sensor:3D G-Sensor 2. GPS positioning accuracy:within 10 meters 3. WIFI positioning accuracy:within 50 meters 4. GSM positioning accuracy:50-200 meters (depending on network conditions) 5. Speed accuracy:0.1 meters/second 6. GPS positioning time:Cold start-38s (Open sky) Hot start-2s (Open sky) The specific time will be affected by the environment. 7. Antenna:4G antenna 8. Working voltage:3.5-4.2V (3.4V low power automatic shutdown) 9. Charging current Charging:5V 500mAh (current can be set according to different battery capacities) 10. GPS antenna:high performance 15X15 ceramic antenna 11. 4G frequency band-CAT1:LTE-FDD: B1/B3/B5/B8, LTE-TDD:B34/B38/B39/B40/B41 Support:China Mobile, China Unicom, China Telecom 4G network Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 * Locator Module Only the above package content, other products are not included. Note: Light reflection 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.