4G full network support: China Mobile, China Telecom, China Unicom; LTE-FDD B1/B3/B5/B8, LTE-TDD B34/B38/B39/B40/B41 Multiple positioning modes: GPS, AGPS, Wi-Fi, Beidou, LBS Outdoor GPS positioning accuracy within 10 meters; indoor Wi-Fi positioning accuracy within 50 meters SOS one-key alarm function Two-way calling capability; high-performance ceramic antenna; customizable buttons for dialing preset numbers Built-in 3D G-Sensor GPS positioning accuracy: within 10 meters Wi-Fi positioning accuracy: within 50 meters GSM positioning accuracy: 50200 meters (varies by network conditions) Speed accuracy: 0.1 meters/second GPS positioning time: Cold start 38 seconds (open sky), Hot start 2 seconds (open sky); actual time may vary based on environment 4G antenna with CAT1 support: LTE-FDD B1/B3/B3/B5/B8, LTE-TDD B34/B38/B39/B40/B41; compatible with major Chinese 4G networks Operating voltage: 3.54.2V (auto shutdown at 3.4V low power) Charging specification: 5V 500mAh (current adjustable based on battery capacity) High-performance 15x15mm ceramic GPS antenna Color: As shown in picture Material: PCB Package includes: 1 x Locator Module (Other items not included) Note: Product appearance, color, and printed markings may vary slightly between batches; these differences do not affect functionality. Lighting and display settings may cause slight color variations between the image and the actual item. Measurement tolerance: 13 cm.